Home / 8,904.68-12,287.39-5,129.08

Finding the Fourth Proportional to 8,904.68, 12,287.39 and 5,129.08

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Solution

The fourth proportional to 8,904.68, 12,287.39 and 5,129.08 is: 7,077.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,904.68 : 12,287.39 = 5,129.08 : x
  2. Step 2: Convert to fraction form
    8,904.68/12,287.39 = 5,129.08/x
  3. Step 3: Cross multiply
    8,904.68x = 12,287.39 × 5,129.08
  4. Step 4: Simplify right side
    8,904.68x = 63,022,994.82
  5. Step 5: Solve for x
    x = 63,022,994.82/8,904.68
  6. Step 6: Final answer
    x = 7,077.51

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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.