Home / 3,835.02-5,292.12-2,156.70

Finding the Fourth Proportional to 3,835.02, 5,292.12 and 2,156.70

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Solution

The fourth proportional to 3,835.02, 5,292.12 and 2,156.70 is: 2,976.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,835.02 : 5,292.12 = 2,156.70 : x
  2. Step 2: Convert to fraction form
    3,835.02/5,292.12 = 2,156.70/x
  3. Step 3: Cross multiply
    3,835.02x = 5,292.12 × 2,156.70
  4. Step 4: Simplify right side
    3,835.02x = 11,413,515.20
  5. Step 5: Solve for x
    x = 11,413,515.20/3,835.02
  6. Step 6: Final answer
    x = 2,976.13

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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.