Home / 3,130.02-4,319.30-1,871.78

Finding the Fourth Proportional to 3,130.02, 4,319.30 and 1,871.78

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Solution

The fourth proportional to 3,130.02, 4,319.30 and 1,871.78 is: 2,582.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.02 : 4,319.30 = 1,871.78 : x
  2. Step 2: Convert to fraction form
    3,130.02/4,319.30 = 1,871.78/x
  3. Step 3: Cross multiply
    3,130.02x = 4,319.30 × 1,871.78
  4. Step 4: Simplify right side
    3,130.02x = 8,084,757.76
  5. Step 5: Solve for x
    x = 8,084,757.76/3,130.02
  6. Step 6: Final answer
    x = 2,582.97

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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.