Home / 1,943.34-2,681.55-1,245.66

Finding the Fourth Proportional to 1,943.34, 2,681.55 and 1,245.66

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Solution

The fourth proportional to 1,943.34, 2,681.55 and 1,245.66 is: 1,718.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.34 : 2,681.55 = 1,245.66 : x
  2. Step 2: Convert to fraction form
    1,943.34/2,681.55 = 1,245.66/x
  3. Step 3: Cross multiply
    1,943.34x = 2,681.55 × 1,245.66
  4. Step 4: Simplify right side
    1,943.34x = 3,340,299.57
  5. Step 5: Solve for x
    x = 3,340,299.57/1,943.34
  6. Step 6: Final answer
    x = 1,718.84

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Double scale
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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.