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Finding the Fourth Proportional to 9,279, 12,805.05 and 5,030.13

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Solution

The fourth proportional to 9,279, 12,805.05 and 5,030.13 is: 6,941.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,279 : 12,805.05 = 5,030.13 : x
  2. Step 2: Convert to fraction form
    9,279/12,805.05 = 5,030.13/x
  3. Step 3: Cross multiply
    9,279x = 12,805.05 × 5,030.13
  4. Step 4: Simplify right side
    9,279x = 64,411,066.16
  5. Step 5: Solve for x
    x = 64,411,066.16/9,279
  6. Step 6: Final answer
    x = 6,941.60

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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.