Home / 5,347.13-7,378.90-2,989.28

Finding the Fourth Proportional to 5,347.13, 7,378.90 and 2,989.28

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Solution

The fourth proportional to 5,347.13, 7,378.90 and 2,989.28 is: 4,125.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.13 : 7,378.90 = 2,989.28 : x
  2. Step 2: Convert to fraction form
    5,347.13/7,378.90 = 2,989.28/x
  3. Step 3: Cross multiply
    5,347.13x = 7,378.90 × 2,989.28
  4. Step 4: Simplify right side
    5,347.13x = 22,057,609.17
  5. Step 5: Solve for x
    x = 22,057,609.17/5,347.13
  6. Step 6: Final answer
    x = 4,125.13

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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.