Home / 2,782.02-4,156.70-2,685.12

Finding the Fourth Proportional to 2,782.02, 4,156.70 and 2,685.12

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Solution

The fourth proportional to 2,782.02, 4,156.70 and 2,685.12 is: 4,011.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.02 : 4,156.70 = 2,685.12 : x
  2. Step 2: Convert to fraction form
    2,782.02/4,156.70 = 2,685.12/x
  3. Step 3: Cross multiply
    2,782.02x = 4,156.70 × 2,685.12
  4. Step 4: Simplify right side
    2,782.02x = 11,161,238.30
  5. Step 5: Solve for x
    x = 11,161,238.30/2,782.02
  6. Step 6: Final answer
    x = 4,011.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.