Home / 5,434.40-8,151.60-1,971.20

Finding the Fourth Proportional to 5,434.40, 8,151.60 and 1,971.20

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Solution

The fourth proportional to 5,434.40, 8,151.60 and 1,971.20 is: 2,956.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,434.40 : 8,151.60 = 1,971.20 : x
  2. Step 2: Convert to fraction form
    5,434.40/8,151.60 = 1,971.20/x
  3. Step 3: Cross multiply
    5,434.40x = 8,151.60 × 1,971.20
  4. Step 4: Simplify right side
    5,434.40x = 16,068,433.92
  5. Step 5: Solve for x
    x = 16,068,433.92/5,434.40
  6. Step 6: Final answer
    x = 2,956.80

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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.