Home / 3,139.47-4,328.24-2,606.45

Finding the Fourth Proportional to 3,139.47, 4,328.24 and 2,606.45

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Solution

The fourth proportional to 3,139.47, 4,328.24 and 2,606.45 is: 3,593.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.47 : 4,328.24 = 2,606.45 : x
  2. Step 2: Convert to fraction form
    3,139.47/4,328.24 = 2,606.45/x
  3. Step 3: Cross multiply
    3,139.47x = 4,328.24 × 2,606.45
  4. Step 4: Simplify right side
    3,139.47x = 11,281,306.47
  5. Step 5: Solve for x
    x = 11,281,306.47/3,139.47
  6. Step 6: Final answer
    x = 3,593.38

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Half scale
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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.