Home / 3,124.02-4,316.86-2,972.20

Finding the Fourth Proportional to 3,124.02, 4,316.86 and 2,972.20

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Solution

The fourth proportional to 3,124.02, 4,316.86 and 2,972.20 is: 4,107.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.02 : 4,316.86 = 2,972.20 : x
  2. Step 2: Convert to fraction form
    3,124.02/4,316.86 = 2,972.20/x
  3. Step 3: Cross multiply
    3,124.02x = 4,316.86 × 2,972.20
  4. Step 4: Simplify right side
    3,124.02x = 12,830,571.29
  5. Step 5: Solve for x
    x = 12,830,571.29/3,124.02
  6. Step 6: Final answer
    x = 4,107.07

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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.