Home / 1,518.89-2,278.34-1,095.17

Finding the Fourth Proportional to 1,518.89, 2,278.34 and 1,095.17

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Solution

The fourth proportional to 1,518.89, 2,278.34 and 1,095.17 is: 1,642.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.89 : 2,278.34 = 1,095.17 : x
  2. Step 2: Convert to fraction form
    1,518.89/2,278.34 = 1,095.17/x
  3. Step 3: Cross multiply
    1,518.89x = 2,278.34 × 1,095.17
  4. Step 4: Simplify right side
    1,518.89x = 2,495,160.96
  5. Step 5: Solve for x
    x = 2,495,160.96/1,518.89
  6. Step 6: Final answer
    x = 1,642.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.