Home / 2,801.55-3,865.26-1,681.92

Finding the Fourth Proportional to 2,801.55, 3,865.26 and 1,681.92

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Solution

The fourth proportional to 2,801.55, 3,865.26 and 1,681.92 is: 2,320.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.55 : 3,865.26 = 1,681.92 : x
  2. Step 2: Convert to fraction form
    2,801.55/3,865.26 = 1,681.92/x
  3. Step 3: Cross multiply
    2,801.55x = 3,865.26 × 1,681.92
  4. Step 4: Simplify right side
    2,801.55x = 6,501,058.10
  5. Step 5: Solve for x
    x = 6,501,058.10/2,801.55
  6. Step 6: Final answer
    x = 2,320.52

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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.