Home / 1,515.17-2,094.76-1,330.58

Finding the Fourth Proportional to 1,515.17, 2,094.76 and 1,330.58

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Solution

The fourth proportional to 1,515.17, 2,094.76 and 1,330.58 is: 1,839.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.17 : 2,094.76 = 1,330.58 : x
  2. Step 2: Convert to fraction form
    1,515.17/2,094.76 = 1,330.58/x
  3. Step 3: Cross multiply
    1,515.17x = 2,094.76 × 1,330.58
  4. Step 4: Simplify right side
    1,515.17x = 2,787,236.95
  5. Step 5: Solve for x
    x = 2,787,236.95/1,515.17
  6. Step 6: Final answer
    x = 1,839.56

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Half scale
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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.