Home / 1,512.15-2,086.70-882.71

Finding the Fourth Proportional to 1,512.15, 2,086.70 and 882.71

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Solution

The fourth proportional to 1,512.15, 2,086.70 and 882.71 is: 1,218.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.15 : 2,086.70 = 882.71 : x
  2. Step 2: Convert to fraction form
    1,512.15/2,086.70 = 882.71/x
  3. Step 3: Cross multiply
    1,512.15x = 2,086.70 × 882.71
  4. Step 4: Simplify right side
    1,512.15x = 1,841,950.96
  5. Step 5: Solve for x
    x = 1,841,950.96/1,512.15
  6. Step 6: Final answer
    x = 1,218.10

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1.5x scale

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.