Home / 1,612.42-2,225.20-913.76

Finding the Fourth Proportional to 1,612.42, 2,225.20 and 913.76

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Solution

The fourth proportional to 1,612.42, 2,225.20 and 913.76 is: 1,261.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.42 : 2,225.20 = 913.76 : x
  2. Step 2: Convert to fraction form
    1,612.42/2,225.20 = 913.76/x
  3. Step 3: Cross multiply
    1,612.42x = 2,225.20 × 913.76
  4. Step 4: Simplify right side
    1,612.42x = 2,033,298.75
  5. Step 5: Solve for x
    x = 2,033,298.75/1,612.42
  6. Step 6: Final answer
    x = 1,261.02

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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.