Home / 5,423.60-8,129.80-2,953.20

Finding the Fourth Proportional to 5,423.60, 8,129.80 and 2,953.20

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Solution

The fourth proportional to 5,423.60, 8,129.80 and 2,953.20 is: 4,426.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.60 : 8,129.80 = 2,953.20 : x
  2. Step 2: Convert to fraction form
    5,423.60/8,129.80 = 2,953.20/x
  3. Step 3: Cross multiply
    5,423.60x = 8,129.80 × 2,953.20
  4. Step 4: Simplify right side
    5,423.60x = 24,008,925.36
  5. Step 5: Solve for x
    x = 24,008,925.36/5,423.60
  6. Step 6: Final answer
    x = 4,426.75

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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.