Home / 2,897.46-3,998.47-1,638.76

Finding the Fourth Proportional to 2,897.46, 3,998.47 and 1,638.76

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Solution

The fourth proportional to 2,897.46, 3,998.47 and 1,638.76 is: 2,261.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,897.46 : 3,998.47 = 1,638.76 : x
  2. Step 2: Convert to fraction form
    2,897.46/3,998.47 = 1,638.76/x
  3. Step 3: Cross multiply
    2,897.46x = 3,998.47 × 1,638.76
  4. Step 4: Simplify right side
    2,897.46x = 6,552,524.50
  5. Step 5: Solve for x
    x = 6,552,524.50/2,897.46
  6. Step 6: Final answer
    x = 2,261.47

Related Problems

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Half scale
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Double scale
Find fourth proportional to 2,898.46, 3,999.84 and 1,639.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.