Home / 2,001.81-2,762.39-1,117.70

Finding the Fourth Proportional to 2,001.81, 2,762.39 and 1,117.70

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Solution

The fourth proportional to 2,001.81, 2,762.39 and 1,117.70 is: 1,542.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,001.81 : 2,762.39 = 1,117.70 : x
  2. Step 2: Convert to fraction form
    2,001.81/2,762.39 = 1,117.70/x
  3. Step 3: Cross multiply
    2,001.81x = 2,762.39 × 1,117.70
  4. Step 4: Simplify right side
    2,001.81x = 3,087,503.90
  5. Step 5: Solve for x
    x = 3,087,503.90/2,001.81
  6. Step 6: Final answer
    x = 1,542.36

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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.