Home / 8,931.09-13,385.70-4,247.40

Finding the Fourth Proportional to 8,931.09, 13,385.70 and 4,247.40

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Solution

The fourth proportional to 8,931.09, 13,385.70 and 4,247.40 is: 6,365.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.09 : 13,385.70 = 4,247.40 : x
  2. Step 2: Convert to fraction form
    8,931.09/13,385.70 = 4,247.40/x
  3. Step 3: Cross multiply
    8,931.09x = 13,385.70 × 4,247.40
  4. Step 4: Simplify right side
    8,931.09x = 56,854,422.18
  5. Step 5: Solve for x
    x = 56,854,422.18/8,931.09
  6. Step 6: Final answer
    x = 6,365.90

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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.