Home / 8,864.64-12,235.68-5,139.36

Finding the Fourth Proportional to 8,864.64, 12,235.68 and 5,139.36

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Solution

The fourth proportional to 8,864.64, 12,235.68 and 5,139.36 is: 7,093.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,864.64 : 12,235.68 = 5,139.36 : x
  2. Step 2: Convert to fraction form
    8,864.64/12,235.68 = 5,139.36/x
  3. Step 3: Cross multiply
    8,864.64x = 12,235.68 × 5,139.36
  4. Step 4: Simplify right side
    8,864.64x = 62,883,564.36
  5. Step 5: Solve for x
    x = 62,883,564.36/8,864.64
  6. Step 6: Final answer
    x = 7,093.75

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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.