Home / 8,638.68-11,925.05-5,807.69

Finding the Fourth Proportional to 8,638.68, 11,925.05 and 5,807.69

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Solution

The fourth proportional to 8,638.68, 11,925.05 and 5,807.69 is: 8,017.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.68 : 11,925.05 = 5,807.69 : x
  2. Step 2: Convert to fraction form
    8,638.68/11,925.05 = 5,807.69/x
  3. Step 3: Cross multiply
    8,638.68x = 11,925.05 × 5,807.69
  4. Step 4: Simplify right side
    8,638.68x = 69,257,010.45
  5. Step 5: Solve for x
    x = 69,257,010.45/8,638.68
  6. Step 6: Final answer
    x = 8,017.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.