Home / 1,145.22-1,579.32-1,061.38

Finding the Fourth Proportional to 1,145.22, 1,579.32 and 1,061.38

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Solution

The fourth proportional to 1,145.22, 1,579.32 and 1,061.38 is: 1,463.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145.22 : 1,579.32 = 1,061.38 : x
  2. Step 2: Convert to fraction form
    1,145.22/1,579.32 = 1,061.38/x
  3. Step 3: Cross multiply
    1,145.22x = 1,579.32 × 1,061.38
  4. Step 4: Simplify right side
    1,145.22x = 1,676,258.66
  5. Step 5: Solve for x
    x = 1,676,258.66/1,145.22
  6. Step 6: Final answer
    x = 1,463.70

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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.