Home / 1,026.20-1,415.27-710.91

Finding the Fourth Proportional to 1,026.20, 1,415.27 and 710.91

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Solution

The fourth proportional to 1,026.20, 1,415.27 and 710.91 is: 980.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.20 : 1,415.27 = 710.91 : x
  2. Step 2: Convert to fraction form
    1,026.20/1,415.27 = 710.91/x
  3. Step 3: Cross multiply
    1,026.20x = 1,415.27 × 710.91
  4. Step 4: Simplify right side
    1,026.20x = 1,006,131.37
  5. Step 5: Solve for x
    x = 1,006,131.37/1,026.20
  6. Step 6: Final answer
    x = 980.44

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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.