Home / 2,990.12-4,480.01-2,685.76

Finding the Fourth Proportional to 2,990.12, 4,480.01 and 2,685.76

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Solution

The fourth proportional to 2,990.12, 4,480.01 and 2,685.76 is: 4,024.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.12 : 4,480.01 = 2,685.76 : x
  2. Step 2: Convert to fraction form
    2,990.12/4,480.01 = 2,685.76/x
  3. Step 3: Cross multiply
    2,990.12x = 4,480.01 × 2,685.76
  4. Step 4: Simplify right side
    2,990.12x = 12,032,217.10
  5. Step 5: Solve for x
    x = 12,032,217.10/2,990.12
  6. Step 6: Final answer
    x = 4,024.00

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1.5x scale

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.