Home / 8,943.28-12,339.93-5,406.70

Finding the Fourth Proportional to 8,943.28, 12,339.93 and 5,406.70

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Solution

The fourth proportional to 8,943.28, 12,339.93 and 5,406.70 is: 7,460.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,943.28 : 12,339.93 = 5,406.70 : x
  2. Step 2: Convert to fraction form
    8,943.28/12,339.93 = 5,406.70/x
  3. Step 3: Cross multiply
    8,943.28x = 12,339.93 × 5,406.70
  4. Step 4: Simplify right side
    8,943.28x = 66,718,299.53
  5. Step 5: Solve for x
    x = 66,718,299.53/8,943.28
  6. Step 6: Final answer
    x = 7,460.16

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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.