Home / 3,951.12-5,926.02-1,320.45

Finding the Fourth Proportional to 3,951.12, 5,926.02 and 1,320.45

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Solution

The fourth proportional to 3,951.12, 5,926.02 and 1,320.45 is: 1,980.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.12 : 5,926.02 = 1,320.45 : x
  2. Step 2: Convert to fraction form
    3,951.12/5,926.02 = 1,320.45/x
  3. Step 3: Cross multiply
    3,951.12x = 5,926.02 × 1,320.45
  4. Step 4: Simplify right side
    3,951.12x = 7,825,013.11
  5. Step 5: Solve for x
    x = 7,825,013.11/3,951.12
  6. Step 6: Final answer
    x = 1,980.45

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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.