Home / 2,218.80-3,330.25-1,123.93

Finding the Fourth Proportional to 2,218.80, 3,330.25 and 1,123.93

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Solution

The fourth proportional to 2,218.80, 3,330.25 and 1,123.93 is: 1,686.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.80 : 3,330.25 = 1,123.93 : x
  2. Step 2: Convert to fraction form
    2,218.80/3,330.25 = 1,123.93/x
  3. Step 3: Cross multiply
    2,218.80x = 3,330.25 × 1,123.93
  4. Step 4: Simplify right side
    2,218.80x = 3,742,967.88
  5. Step 5: Solve for x
    x = 3,742,967.88/2,218.80
  6. Step 6: Final answer
    x = 1,686.93

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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.