Home / 1,701.78-2,347.68-1,071.87

Finding the Fourth Proportional to 1,701.78, 2,347.68 and 1,071.87

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Solution

The fourth proportional to 1,701.78, 2,347.68 and 1,071.87 is: 1,478.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,701.78 : 2,347.68 = 1,071.87 : x
  2. Step 2: Convert to fraction form
    1,701.78/2,347.68 = 1,071.87/x
  3. Step 3: Cross multiply
    1,701.78x = 2,347.68 × 1,071.87
  4. Step 4: Simplify right side
    1,701.78x = 2,516,407.76
  5. Step 5: Solve for x
    x = 2,516,407.76/1,701.78
  6. Step 6: Final answer
    x = 1,478.69

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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.