Home / 1,660.79-2,292.47-1,031.80

Finding the Fourth Proportional to 1,660.79, 2,292.47 and 1,031.80

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Solution

The fourth proportional to 1,660.79, 2,292.47 and 1,031.80 is: 1,424.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.79 : 2,292.47 = 1,031.80 : x
  2. Step 2: Convert to fraction form
    1,660.79/2,292.47 = 1,031.80/x
  3. Step 3: Cross multiply
    1,660.79x = 2,292.47 × 1,031.80
  4. Step 4: Simplify right side
    1,660.79x = 2,365,365.39
  5. Step 5: Solve for x
    x = 2,365,365.39/1,660.79
  6. Step 6: Final answer
    x = 1,424.24

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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.