Home / 1,681.83-2,319.33-1,282.78

Finding the Fourth Proportional to 1,681.83, 2,319.33 and 1,282.78

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Solution

The fourth proportional to 1,681.83, 2,319.33 and 1,282.78 is: 1,769.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.83 : 2,319.33 = 1,282.78 : x
  2. Step 2: Convert to fraction form
    1,681.83/2,319.33 = 1,282.78/x
  3. Step 3: Cross multiply
    1,681.83x = 2,319.33 × 1,282.78
  4. Step 4: Simplify right side
    1,681.83x = 2,975,190.14
  5. Step 5: Solve for x
    x = 2,975,190.14/1,681.83
  6. Step 6: Final answer
    x = 1,769.02

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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.