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Finding the Fourth Proportional to 8,777.16, 12,104.64 and 5,239.08

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Solution

The fourth proportional to 8,777.16, 12,104.64 and 5,239.08 is: 7,225.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.16 : 12,104.64 = 5,239.08 : x
  2. Step 2: Convert to fraction form
    8,777.16/12,104.64 = 5,239.08/x
  3. Step 3: Cross multiply
    8,777.16x = 12,104.64 × 5,239.08
  4. Step 4: Simplify right side
    8,777.16x = 63,417,177.33
  5. Step 5: Solve for x
    x = 63,417,177.33/8,777.16
  6. Step 6: Final answer
    x = 7,225.25

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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.