Home / 1,434.24-2,152.80-1,113.12

Finding the Fourth Proportional to 1,434.24, 2,152.80 and 1,113.12

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Solution

The fourth proportional to 1,434.24, 2,152.80 and 1,113.12 is: 1,670.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.24 : 2,152.80 = 1,113.12 : x
  2. Step 2: Convert to fraction form
    1,434.24/2,152.80 = 1,113.12/x
  3. Step 3: Cross multiply
    1,434.24x = 2,152.80 × 1,113.12
  4. Step 4: Simplify right side
    1,434.24x = 2,396,324.74
  5. Step 5: Solve for x
    x = 2,396,324.74/1,434.24
  6. Step 6: Final answer
    x = 1,670.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.