Home / 8,645.85-11,931.50-5,288.60

Finding the Fourth Proportional to 8,645.85, 11,931.50 and 5,288.60

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Solution

The fourth proportional to 8,645.85, 11,931.50 and 5,288.60 is: 7,298.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.85 : 11,931.50 = 5,288.60 : x
  2. Step 2: Convert to fraction form
    8,645.85/11,931.50 = 5,288.60/x
  3. Step 3: Cross multiply
    8,645.85x = 11,931.50 × 5,288.60
  4. Step 4: Simplify right side
    8,645.85x = 63,100,930.90
  5. Step 5: Solve for x
    x = 63,100,930.90/8,645.85
  6. Step 6: Final answer
    x = 7,298.41

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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.