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Finding the Fourth Proportional to 9,390.30, 14,085.45 and 7,854.30

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Solution

The fourth proportional to 9,390.30, 14,085.45 and 7,854.30 is: 11,781.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,390.30 : 14,085.45 = 7,854.30 : x
  2. Step 2: Convert to fraction form
    9,390.30/14,085.45 = 7,854.30/x
  3. Step 3: Cross multiply
    9,390.30x = 14,085.45 × 7,854.30
  4. Step 4: Simplify right side
    9,390.30x = 110,631,349.94
  5. Step 5: Solve for x
    x = 110,631,349.94/9,390.30
  6. Step 6: Final answer
    x = 11,781.45

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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.