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Finding the Fourth Proportional to 7,774.79, 10,728.69 and 4,587.92

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Solution

The fourth proportional to 7,774.79, 10,728.69 and 4,587.92 is: 6,331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,774.79 : 10,728.69 = 4,587.92 : x
  2. Step 2: Convert to fraction form
    7,774.79/10,728.69 = 4,587.92/x
  3. Step 3: Cross multiply
    7,774.79x = 10,728.69 × 4,587.92
  4. Step 4: Simplify right side
    7,774.79x = 49,222,371.42
  5. Step 5: Solve for x
    x = 49,222,371.42/7,774.79
  6. Step 6: Final answer
    x = 6,331.02

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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.