Home / 8,931.10-13,398.89-2,690.98

Finding the Fourth Proportional to 8,931.10, 13,398.89 and 2,690.98

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Solution

The fourth proportional to 8,931.10, 13,398.89 and 2,690.98 is: 4,037.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.10 : 13,398.89 = 2,690.98 : x
  2. Step 2: Convert to fraction form
    8,931.10/13,398.89 = 2,690.98/x
  3. Step 3: Cross multiply
    8,931.10x = 13,398.89 × 2,690.98
  4. Step 4: Simplify right side
    8,931.10x = 36,056,145.01
  5. Step 5: Solve for x
    x = 36,056,145.01/8,931.10
  6. Step 6: Final answer
    x = 4,037.14

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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.