Home / 1,119.64-1,669.85-1,061.32

Finding the Fourth Proportional to 1,119.64, 1,669.85 and 1,061.32

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Solution

The fourth proportional to 1,119.64, 1,669.85 and 1,061.32 is: 1,582.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.64 : 1,669.85 = 1,061.32 : x
  2. Step 2: Convert to fraction form
    1,119.64/1,669.85 = 1,061.32/x
  3. Step 3: Cross multiply
    1,119.64x = 1,669.85 × 1,061.32
  4. Step 4: Simplify right side
    1,119.64x = 1,772,245.20
  5. Step 5: Solve for x
    x = 1,772,245.20/1,119.64
  6. Step 6: Final answer
    x = 1,582.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.