Home / 8,418.66-11,626.11-6,931.50

Finding the Fourth Proportional to 8,418.66, 11,626.11 and 6,931.50

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Solution

The fourth proportional to 8,418.66, 11,626.11 and 6,931.50 is: 9,572.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.66 : 11,626.11 = 6,931.50 : x
  2. Step 2: Convert to fraction form
    8,418.66/11,626.11 = 6,931.50/x
  3. Step 3: Cross multiply
    8,418.66x = 11,626.11 × 6,931.50
  4. Step 4: Simplify right side
    8,418.66x = 80,586,381.47
  5. Step 5: Solve for x
    x = 80,586,381.47/8,418.66
  6. Step 6: Final answer
    x = 9,572.35

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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.