Home / 1,851.77-2,555.20-1,189.52

Finding the Fourth Proportional to 1,851.77, 2,555.20 and 1,189.52

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Solution

The fourth proportional to 1,851.77, 2,555.20 and 1,189.52 is: 1,641.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.77 : 2,555.20 = 1,189.52 : x
  2. Step 2: Convert to fraction form
    1,851.77/2,555.20 = 1,189.52/x
  3. Step 3: Cross multiply
    1,851.77x = 2,555.20 × 1,189.52
  4. Step 4: Simplify right side
    1,851.77x = 3,039,459.80
  5. Step 5: Solve for x
    x = 3,039,459.80/1,851.77
  6. Step 6: Final answer
    x = 1,641.38

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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.