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Finding the Fourth Proportional to 2,679.64, 4,018.83 and 1,510.15

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Solution

The fourth proportional to 2,679.64, 4,018.83 and 1,510.15 is: 2,264.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.64 : 4,018.83 = 1,510.15 : x
  2. Step 2: Convert to fraction form
    2,679.64/4,018.83 = 1,510.15/x
  3. Step 3: Cross multiply
    2,679.64x = 4,018.83 × 1,510.15
  4. Step 4: Simplify right side
    2,679.64x = 6,069,036.12
  5. Step 5: Solve for x
    x = 6,069,036.12/2,679.64
  6. Step 6: Final answer
    x = 2,264.87

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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.