Home / 4,123.60-6,187.20-1,931.20

Finding the Fourth Proportional to 4,123.60, 6,187.20 and 1,931.20

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Solution

The fourth proportional to 4,123.60, 6,187.20 and 1,931.20 is: 2,897.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,123.60 : 6,187.20 = 1,931.20 : x
  2. Step 2: Convert to fraction form
    4,123.60/6,187.20 = 1,931.20/x
  3. Step 3: Cross multiply
    4,123.60x = 6,187.20 × 1,931.20
  4. Step 4: Simplify right side
    4,123.60x = 11,948,720.64
  5. Step 5: Solve for x
    x = 11,948,720.64/4,123.60
  6. Step 6: Final answer
    x = 2,897.64

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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.