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Finding the Fourth Proportional to 8,987.41, 13,461.48 and 7,409.69

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Solution

The fourth proportional to 8,987.41, 13,461.48 and 7,409.69 is: 11,098.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.41 : 13,461.48 = 7,409.69 : x
  2. Step 2: Convert to fraction form
    8,987.41/13,461.48 = 7,409.69/x
  3. Step 3: Cross multiply
    8,987.41x = 13,461.48 × 7,409.69
  4. Step 4: Simplify right side
    8,987.41x = 99,745,393.74
  5. Step 5: Solve for x
    x = 99,745,393.74/8,987.41
  6. Step 6: Final answer
    x = 11,098.35

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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.