Home / 1,742.40-2,403.90-1,113.03

Finding the Fourth Proportional to 1,742.40, 2,403.90 and 1,113.03

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Solution

The fourth proportional to 1,742.40, 2,403.90 and 1,113.03 is: 1,535.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.40 : 2,403.90 = 1,113.03 : x
  2. Step 2: Convert to fraction form
    1,742.40/2,403.90 = 1,113.03/x
  3. Step 3: Cross multiply
    1,742.40x = 2,403.90 × 1,113.03
  4. Step 4: Simplify right side
    1,742.40x = 2,675,612.82
  5. Step 5: Solve for x
    x = 2,675,612.82/1,742.40
  6. Step 6: Final answer
    x = 1,535.59

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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.