Home / 1,555.88-2,145.29-1,113.03

Finding the Fourth Proportional to 1,555.88, 2,145.29 and 1,113.03

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Solution

The fourth proportional to 1,555.88, 2,145.29 and 1,113.03 is: 1,534.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.88 : 2,145.29 = 1,113.03 : x
  2. Step 2: Convert to fraction form
    1,555.88/2,145.29 = 1,113.03/x
  3. Step 3: Cross multiply
    1,555.88x = 2,145.29 × 1,113.03
  4. Step 4: Simplify right side
    1,555.88x = 2,387,766.56
  5. Step 5: Solve for x
    x = 2,387,766.56/1,555.88
  6. Step 6: Final answer
    x = 1,534.68

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Double scale
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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.