Home / 8,722.68-12,036.60-5,137.08

Finding the Fourth Proportional to 8,722.68, 12,036.60 and 5,137.08

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Solution

The fourth proportional to 8,722.68, 12,036.60 and 5,137.08 is: 7,088.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.68 : 12,036.60 = 5,137.08 : x
  2. Step 2: Convert to fraction form
    8,722.68/12,036.60 = 5,137.08/x
  3. Step 3: Cross multiply
    8,722.68x = 12,036.60 × 5,137.08
  4. Step 4: Simplify right side
    8,722.68x = 61,832,977.13
  5. Step 5: Solve for x
    x = 61,832,977.13/8,722.68
  6. Step 6: Final answer
    x = 7,088.76

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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.