Home / 8,868.14-13,289.64-4,921.12

Finding the Fourth Proportional to 8,868.14, 13,289.64 and 4,921.12

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Solution

The fourth proportional to 8,868.14, 13,289.64 and 4,921.12 is: 7,374.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.14 : 13,289.64 = 4,921.12 : x
  2. Step 2: Convert to fraction form
    8,868.14/13,289.64 = 4,921.12/x
  3. Step 3: Cross multiply
    8,868.14x = 13,289.64 × 4,921.12
  4. Step 4: Simplify right side
    8,868.14x = 65,399,913.20
  5. Step 5: Solve for x
    x = 65,399,913.20/8,868.14
  6. Step 6: Final answer
    x = 7,374.70

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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.