Home / 1,031.19-1,429.15-1,011.75

Finding the Fourth Proportional to 1,031.19, 1,429.15 and 1,011.75

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Solution

The fourth proportional to 1,031.19, 1,429.15 and 1,011.75 is: 1,402.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031.19 : 1,429.15 = 1,011.75 : x
  2. Step 2: Convert to fraction form
    1,031.19/1,429.15 = 1,011.75/x
  3. Step 3: Cross multiply
    1,031.19x = 1,429.15 × 1,011.75
  4. Step 4: Simplify right side
    1,031.19x = 1,445,942.51
  5. Step 5: Solve for x
    x = 1,445,942.51/1,031.19
  6. Step 6: Final answer
    x = 1,402.21

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.