Home / 1,712.16-2,565.48-889.20

Finding the Fourth Proportional to 1,712.16, 2,565.48 and 889.20

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Solution

The fourth proportional to 1,712.16, 2,565.48 and 889.20 is: 1,332.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.16 : 2,565.48 = 889.20 : x
  2. Step 2: Convert to fraction form
    1,712.16/2,565.48 = 889.20/x
  3. Step 3: Cross multiply
    1,712.16x = 2,565.48 × 889.20
  4. Step 4: Simplify right side
    1,712.16x = 2,281,224.82
  5. Step 5: Solve for x
    x = 2,281,224.82/1,712.16
  6. Step 6: Final answer
    x = 1,332.37

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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.