Home / 1,521.08-2,278.26-1,158.20

Finding the Fourth Proportional to 1,521.08, 2,278.26 and 1,158.20

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Solution

The fourth proportional to 1,521.08, 2,278.26 and 1,158.20 is: 1,734.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.08 : 2,278.26 = 1,158.20 : x
  2. Step 2: Convert to fraction form
    1,521.08/2,278.26 = 1,158.20/x
  3. Step 3: Cross multiply
    1,521.08x = 2,278.26 × 1,158.20
  4. Step 4: Simplify right side
    1,521.08x = 2,638,680.73
  5. Step 5: Solve for x
    x = 2,638,680.73/1,521.08
  6. Step 6: Final answer
    x = 1,734.74

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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.