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Finding the Fourth Proportional to 8,559.65, 11,807.88 and 5,417.66

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Solution

The fourth proportional to 8,559.65, 11,807.88 and 5,417.66 is: 7,473.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559.65 : 11,807.88 = 5,417.66 : x
  2. Step 2: Convert to fraction form
    8,559.65/11,807.88 = 5,417.66/x
  3. Step 3: Cross multiply
    8,559.65x = 11,807.88 × 5,417.66
  4. Step 4: Simplify right side
    8,559.65x = 63,971,020.12
  5. Step 5: Solve for x
    x = 63,971,020.12/8,559.65
  6. Step 6: Final answer
    x = 7,473.56

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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.