Home / 3,140.02-4,331.34-2,077.80

Finding the Fourth Proportional to 3,140.02, 4,331.34 and 2,077.80

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Solution

The fourth proportional to 3,140.02, 4,331.34 and 2,077.80 is: 2,866.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.02 : 4,331.34 = 2,077.80 : x
  2. Step 2: Convert to fraction form
    3,140.02/4,331.34 = 2,077.80/x
  3. Step 3: Cross multiply
    3,140.02x = 4,331.34 × 2,077.80
  4. Step 4: Simplify right side
    3,140.02x = 8,999,658.25
  5. Step 5: Solve for x
    x = 8,999,658.25/3,140.02
  6. Step 6: Final answer
    x = 2,866.11

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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.