Home / 2,163.18-2,985.02-1,278.83

Finding the Fourth Proportional to 2,163.18, 2,985.02 and 1,278.83

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Solution

The fourth proportional to 2,163.18, 2,985.02 and 1,278.83 is: 1,764.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.18 : 2,985.02 = 1,278.83 : x
  2. Step 2: Convert to fraction form
    2,163.18/2,985.02 = 1,278.83/x
  3. Step 3: Cross multiply
    2,163.18x = 2,985.02 × 1,278.83
  4. Step 4: Simplify right side
    2,163.18x = 3,817,311.81
  5. Step 5: Solve for x
    x = 3,817,311.81/2,163.18
  6. Step 6: Final answer
    x = 1,764.68

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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.