Home / 3,931.90-5,426.93-2,254.25

Finding the Fourth Proportional to 3,931.90, 5,426.93 and 2,254.25

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Solution

The fourth proportional to 3,931.90, 5,426.93 and 2,254.25 is: 3,111.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.90 : 5,426.93 = 2,254.25 : x
  2. Step 2: Convert to fraction form
    3,931.90/5,426.93 = 2,254.25/x
  3. Step 3: Cross multiply
    3,931.90x = 5,426.93 × 2,254.25
  4. Step 4: Simplify right side
    3,931.90x = 12,233,676.16
  5. Step 5: Solve for x
    x = 12,233,676.16/3,931.90
  6. Step 6: Final answer
    x = 3,111.39

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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.