Home / 2,989.02-4,124.98-2,490.82

Finding the Fourth Proportional to 2,989.02, 4,124.98 and 2,490.82

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Solution

The fourth proportional to 2,989.02, 4,124.98 and 2,490.82 is: 3,437.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.02 : 4,124.98 = 2,490.82 : x
  2. Step 2: Convert to fraction form
    2,989.02/4,124.98 = 2,490.82/x
  3. Step 3: Cross multiply
    2,989.02x = 4,124.98 × 2,490.82
  4. Step 4: Simplify right side
    2,989.02x = 10,274,576.94
  5. Step 5: Solve for x
    x = 10,274,576.94/2,989.02
  6. Step 6: Final answer
    x = 3,437.44

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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.