Home / 1,319.64-1,818.36-1,133.52

Finding the Fourth Proportional to 1,319.64, 1,818.36 and 1,133.52

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Solution

The fourth proportional to 1,319.64, 1,818.36 and 1,133.52 is: 1,561.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.64 : 1,818.36 = 1,133.52 : x
  2. Step 2: Convert to fraction form
    1,319.64/1,818.36 = 1,133.52/x
  3. Step 3: Cross multiply
    1,319.64x = 1,818.36 × 1,133.52
  4. Step 4: Simplify right side
    1,319.64x = 2,061,147.43
  5. Step 5: Solve for x
    x = 2,061,147.43/1,319.64
  6. Step 6: Final answer
    x = 1,561.90

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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.