Home / 1,780.78-2,457.51-1,034.80

Finding the Fourth Proportional to 1,780.78, 2,457.51 and 1,034.80

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Solution

The fourth proportional to 1,780.78, 2,457.51 and 1,034.80 is: 1,428.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.78 : 2,457.51 = 1,034.80 : x
  2. Step 2: Convert to fraction form
    1,780.78/2,457.51 = 1,034.80/x
  3. Step 3: Cross multiply
    1,780.78x = 2,457.51 × 1,034.80
  4. Step 4: Simplify right side
    1,780.78x = 2,543,031.35
  5. Step 5: Solve for x
    x = 2,543,031.35/1,780.78
  6. Step 6: Final answer
    x = 1,428.04

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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.