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Finding the Fourth Proportional to 8,365.61, 11,552.36 and 5,386.64

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Solution

The fourth proportional to 8,365.61, 11,552.36 and 5,386.64 is: 7,438.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,365.61 : 11,552.36 = 5,386.64 : x
  2. Step 2: Convert to fraction form
    8,365.61/11,552.36 = 5,386.64/x
  3. Step 3: Cross multiply
    8,365.61x = 11,552.36 × 5,386.64
  4. Step 4: Simplify right side
    8,365.61x = 62,228,319.78
  5. Step 5: Solve for x
    x = 62,228,319.78/8,365.61
  6. Step 6: Final answer
    x = 7,438.59

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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.