Home / 2,079.61-3,119.99-1,038.35

Finding the Fourth Proportional to 2,079.61, 3,119.99 and 1,038.35

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Solution

The fourth proportional to 2,079.61, 3,119.99 and 1,038.35 is: 1,557.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.61 : 3,119.99 = 1,038.35 : x
  2. Step 2: Convert to fraction form
    2,079.61/3,119.99 = 1,038.35/x
  3. Step 3: Cross multiply
    2,079.61x = 3,119.99 × 1,038.35
  4. Step 4: Simplify right side
    2,079.61x = 3,239,644.22
  5. Step 5: Solve for x
    x = 3,239,644.22/2,079.61
  6. Step 6: Final answer
    x = 1,557.82

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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.