Home / 1,511.20-2,086.32-1,041.76

Finding the Fourth Proportional to 1,511.20, 2,086.32 and 1,041.76

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Solution

The fourth proportional to 1,511.20, 2,086.32 and 1,041.76 is: 1,438.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.20 : 2,086.32 = 1,041.76 : x
  2. Step 2: Convert to fraction form
    1,511.20/2,086.32 = 1,041.76/x
  3. Step 3: Cross multiply
    1,511.20x = 2,086.32 × 1,041.76
  4. Step 4: Simplify right side
    1,511.20x = 2,173,444.72
  5. Step 5: Solve for x
    x = 2,173,444.72/1,511.20
  6. Step 6: Final answer
    x = 1,438.22

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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.