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Finding the Fourth Proportional to 8,899.80, 13,349.70 and 4,291.80

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Solution

The fourth proportional to 8,899.80, 13,349.70 and 4,291.80 is: 6,437.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.80 : 13,349.70 = 4,291.80 : x
  2. Step 2: Convert to fraction form
    8,899.80/13,349.70 = 4,291.80/x
  3. Step 3: Cross multiply
    8,899.80x = 13,349.70 × 4,291.80
  4. Step 4: Simplify right side
    8,899.80x = 57,294,242.46
  5. Step 5: Solve for x
    x = 57,294,242.46/8,899.80
  6. Step 6: Final answer
    x = 6,437.70

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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.