Home / 1,777.79-2,453.48-1,031.78

Finding the Fourth Proportional to 1,777.79, 2,453.48 and 1,031.78

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Solution

The fourth proportional to 1,777.79, 2,453.48 and 1,031.78 is: 1,423.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,777.79 : 2,453.48 = 1,031.78 : x
  2. Step 2: Convert to fraction form
    1,777.79/2,453.48 = 1,031.78/x
  3. Step 3: Cross multiply
    1,777.79x = 2,453.48 × 1,031.78
  4. Step 4: Simplify right side
    1,777.79x = 2,531,451.59
  5. Step 5: Solve for x
    x = 2,531,451.59/1,777.79
  6. Step 6: Final answer
    x = 1,423.93

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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.