Home / 3,123.02-4,315.47-2,971.16

Finding the Fourth Proportional to 3,123.02, 4,315.47 and 2,971.16

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Solution

The fourth proportional to 3,123.02, 4,315.47 and 2,971.16 is: 4,105.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.02 : 4,315.47 = 2,971.16 : x
  2. Step 2: Convert to fraction form
    3,123.02/4,315.47 = 2,971.16/x
  3. Step 3: Cross multiply
    3,123.02x = 4,315.47 × 2,971.16
  4. Step 4: Simplify right side
    3,123.02x = 12,821,951.85
  5. Step 5: Solve for x
    x = 12,821,951.85/3,123.02
  6. Step 6: Final answer
    x = 4,105.63

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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.