Home / 1,681.76-2,320.92-1,158.08

Finding the Fourth Proportional to 1,681.76, 2,320.92 and 1,158.08

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Solution

The fourth proportional to 1,681.76, 2,320.92 and 1,158.08 is: 1,598.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.76 : 2,320.92 = 1,158.08 : x
  2. Step 2: Convert to fraction form
    1,681.76/2,320.92 = 1,158.08/x
  3. Step 3: Cross multiply
    1,681.76x = 2,320.92 × 1,158.08
  4. Step 4: Simplify right side
    1,681.76x = 2,687,811.03
  5. Step 5: Solve for x
    x = 2,687,811.03/1,681.76
  6. Step 6: Final answer
    x = 1,598.21

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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.