Home / 1,511.85-2,086.47-882.57

Finding the Fourth Proportional to 1,511.85, 2,086.47 and 882.57

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Solution

The fourth proportional to 1,511.85, 2,086.47 and 882.57 is: 1,218.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.85 : 2,086.47 = 882.57 : x
  2. Step 2: Convert to fraction form
    1,511.85/2,086.47 = 882.57/x
  3. Step 3: Cross multiply
    1,511.85x = 2,086.47 × 882.57
  4. Step 4: Simplify right side
    1,511.85x = 1,841,455.83
  5. Step 5: Solve for x
    x = 1,841,455.83/1,511.85
  6. Step 6: Final answer
    x = 1,218.01

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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.