Home / 2,079.02-3,117.90-618.32

Finding the Fourth Proportional to 2,079.02, 3,117.90 and 618.32

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Solution

The fourth proportional to 2,079.02, 3,117.90 and 618.32 is: 927.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.02 : 3,117.90 = 618.32 : x
  2. Step 2: Convert to fraction form
    2,079.02/3,117.90 = 618.32/x
  3. Step 3: Cross multiply
    2,079.02x = 3,117.90 × 618.32
  4. Step 4: Simplify right side
    2,079.02x = 1,927,859.93
  5. Step 5: Solve for x
    x = 1,927,859.93/2,079.02
  6. Step 6: Final answer
    x = 927.29

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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.