Home / 2,289.39-3,155.67-1,543.11

Finding the Fourth Proportional to 2,289.39, 3,155.67 and 1,543.11

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Solution

The fourth proportional to 2,289.39, 3,155.67 and 1,543.11 is: 2,127.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.39 : 3,155.67 = 1,543.11 : x
  2. Step 2: Convert to fraction form
    2,289.39/3,155.67 = 1,543.11/x
  3. Step 3: Cross multiply
    2,289.39x = 3,155.67 × 1,543.11
  4. Step 4: Simplify right side
    2,289.39x = 4,869,545.93
  5. Step 5: Solve for x
    x = 4,869,545.93/2,289.39
  6. Step 6: Final answer
    x = 2,127.01

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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.