Home / 2,851.49-3,931.95-1,854.92

Finding the Fourth Proportional to 2,851.49, 3,931.95 and 1,854.92

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Solution

The fourth proportional to 2,851.49, 3,931.95 and 1,854.92 is: 2,557.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.49 : 3,931.95 = 1,854.92 : x
  2. Step 2: Convert to fraction form
    2,851.49/3,931.95 = 1,854.92/x
  3. Step 3: Cross multiply
    2,851.49x = 3,931.95 × 1,854.92
  4. Step 4: Simplify right side
    2,851.49x = 7,293,452.69
  5. Step 5: Solve for x
    x = 7,293,452.69/2,851.49
  6. Step 6: Final answer
    x = 2,557.77

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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.