Home / 8,611.13-12,916.70-2,455.13

Finding the Fourth Proportional to 8,611.13, 12,916.70 and 2,455.13

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Solution

The fourth proportional to 8,611.13, 12,916.70 and 2,455.13 is: 3,682.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.13 : 12,916.70 = 2,455.13 : x
  2. Step 2: Convert to fraction form
    8,611.13/12,916.70 = 2,455.13/x
  3. Step 3: Cross multiply
    8,611.13x = 12,916.70 × 2,455.13
  4. Step 4: Simplify right side
    8,611.13x = 31,712,177.67
  5. Step 5: Solve for x
    x = 31,712,177.67/8,611.13
  6. Step 6: Final answer
    x = 3,682.70

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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.