Home / 2,851.23-3,931.60-1,854.66

Finding the Fourth Proportional to 2,851.23, 3,931.60 and 1,854.66

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Solution

The fourth proportional to 2,851.23, 3,931.60 and 1,854.66 is: 2,557.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.23 : 3,931.60 = 1,854.66 : x
  2. Step 2: Convert to fraction form
    2,851.23/3,931.60 = 1,854.66/x
  3. Step 3: Cross multiply
    2,851.23x = 3,931.60 × 1,854.66
  4. Step 4: Simplify right side
    2,851.23x = 7,291,781.26
  5. Step 5: Solve for x
    x = 7,291,781.26/2,851.23
  6. Step 6: Final answer
    x = 2,557.42

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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.