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Finding the Fourth Proportional to 8,959.56, 13,440.72 and 4,574.64

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Solution

The fourth proportional to 8,959.56, 13,440.72 and 4,574.64 is: 6,862.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.56 : 13,440.72 = 4,574.64 : x
  2. Step 2: Convert to fraction form
    8,959.56/13,440.72 = 4,574.64/x
  3. Step 3: Cross multiply
    8,959.56x = 13,440.72 × 4,574.64
  4. Step 4: Simplify right side
    8,959.56x = 61,486,455.34
  5. Step 5: Solve for x
    x = 61,486,455.34/8,959.56
  6. Step 6: Final answer
    x = 6,862.66

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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.