Home / 1,884.65-2,601.38-1,221.55

Finding the Fourth Proportional to 1,884.65, 2,601.38 and 1,221.55

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Solution

The fourth proportional to 1,884.65, 2,601.38 and 1,221.55 is: 1,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,884.65 : 2,601.38 = 1,221.55 : x
  2. Step 2: Convert to fraction form
    1,884.65/2,601.38 = 1,221.55/x
  3. Step 3: Cross multiply
    1,884.65x = 2,601.38 × 1,221.55
  4. Step 4: Simplify right side
    1,884.65x = 3,177,715.74
  5. Step 5: Solve for x
    x = 3,177,715.74/1,884.65
  6. Step 6: Final answer
    x = 1,686.10

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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.