Home / 9,287.40-13,931.10-8,959.35

Finding the Fourth Proportional to 9,287.40, 13,931.10 and 8,959.35

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Solution

The fourth proportional to 9,287.40, 13,931.10 and 8,959.35 is: 13,439.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,287.40 : 13,931.10 = 8,959.35 : x
  2. Step 2: Convert to fraction form
    9,287.40/13,931.10 = 8,959.35/x
  3. Step 3: Cross multiply
    9,287.40x = 13,931.10 × 8,959.35
  4. Step 4: Simplify right side
    9,287.40x = 124,813,600.79
  5. Step 5: Solve for x
    x = 124,813,600.79/9,287.40
  6. Step 6: Final answer
    x = 13,439.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.