Home / 2,990.02-4,125.92-1,730.82

Finding the Fourth Proportional to 2,990.02, 4,125.92 and 1,730.82

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Solution

The fourth proportional to 2,990.02, 4,125.92 and 1,730.82 is: 2,388.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.02 : 4,125.92 = 1,730.82 : x
  2. Step 2: Convert to fraction form
    2,990.02/4,125.92 = 1,730.82/x
  3. Step 3: Cross multiply
    2,990.02x = 4,125.92 × 1,730.82
  4. Step 4: Simplify right side
    2,990.02x = 7,141,216.20
  5. Step 5: Solve for x
    x = 7,141,216.20/2,990.02
  6. Step 6: Final answer
    x = 2,388.35

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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.