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Finding the Fourth Proportional to 8,931.53, 12,326.97 and 6,803.66

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Solution

The fourth proportional to 8,931.53, 12,326.97 and 6,803.66 is: 9,390.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.53 : 12,326.97 = 6,803.66 : x
  2. Step 2: Convert to fraction form
    8,931.53/12,326.97 = 6,803.66/x
  3. Step 3: Cross multiply
    8,931.53x = 12,326.97 × 6,803.66
  4. Step 4: Simplify right side
    8,931.53x = 83,868,512.71
  5. Step 5: Solve for x
    x = 83,868,512.71/8,931.53
  6. Step 6: Final answer
    x = 9,390.16

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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.