Home / 2,905.98-4,009.76-1,646.78

Finding the Fourth Proportional to 2,905.98, 4,009.76 and 1,646.78

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Solution

The fourth proportional to 2,905.98, 4,009.76 and 1,646.78 is: 2,272.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.98 : 4,009.76 = 1,646.78 : x
  2. Step 2: Convert to fraction form
    2,905.98/4,009.76 = 1,646.78/x
  3. Step 3: Cross multiply
    2,905.98x = 4,009.76 × 1,646.78
  4. Step 4: Simplify right side
    2,905.98x = 6,603,192.57
  5. Step 5: Solve for x
    x = 6,603,192.57/2,905.98
  6. Step 6: Final answer
    x = 2,272.28

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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.