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Finding the Fourth Proportional to 9,279.93, 12,807.69 and 7,305.35

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Solution

The fourth proportional to 9,279.93, 12,807.69 and 7,305.35 is: 10,082.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,279.93 : 12,807.69 = 7,305.35 : x
  2. Step 2: Convert to fraction form
    9,279.93/12,807.69 = 7,305.35/x
  3. Step 3: Cross multiply
    9,279.93x = 12,807.69 × 7,305.35
  4. Step 4: Simplify right side
    9,279.93x = 93,564,594.10
  5. Step 5: Solve for x
    x = 93,564,594.10/9,279.93
  6. Step 6: Final answer
    x = 10,082.47

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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.