Home / 2,897.47-3,998.45-1,638.58

Finding the Fourth Proportional to 2,897.47, 3,998.45 and 1,638.58

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Solution

The fourth proportional to 2,897.47, 3,998.45 and 1,638.58 is: 2,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,897.47 : 3,998.45 = 1,638.58 : x
  2. Step 2: Convert to fraction form
    2,897.47/3,998.45 = 1,638.58/x
  3. Step 3: Cross multiply
    2,897.47x = 3,998.45 × 1,638.58
  4. Step 4: Simplify right side
    2,897.47x = 6,551,772.58
  5. Step 5: Solve for x
    x = 6,551,772.58/2,897.47
  6. Step 6: Final answer
    x = 2,261.20

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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.