Home / 1,518.72-2,096.21-929.76

Finding the Fourth Proportional to 1,518.72, 2,096.21 and 929.76

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Solution

The fourth proportional to 1,518.72, 2,096.21 and 929.76 is: 1,283.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.72 : 2,096.21 = 929.76 : x
  2. Step 2: Convert to fraction form
    1,518.72/2,096.21 = 929.76/x
  3. Step 3: Cross multiply
    1,518.72x = 2,096.21 × 929.76
  4. Step 4: Simplify right side
    1,518.72x = 1,948,972.21
  5. Step 5: Solve for x
    x = 1,948,972.21/1,518.72
  6. Step 6: Final answer
    x = 1,283.30

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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.