Home / 1,277.71-1,917.56-1,031.51

Finding the Fourth Proportional to 1,277.71, 1,917.56 and 1,031.51

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Solution

The fourth proportional to 1,277.71, 1,917.56 and 1,031.51 is: 1,548.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.71 : 1,917.56 = 1,031.51 : x
  2. Step 2: Convert to fraction form
    1,277.71/1,917.56 = 1,031.51/x
  3. Step 3: Cross multiply
    1,277.71x = 1,917.56 × 1,031.51
  4. Step 4: Simplify right side
    1,277.71x = 1,977,989.69
  5. Step 5: Solve for x
    x = 1,977,989.69/1,277.71
  6. Step 6: Final answer
    x = 1,548.08

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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.