Home / 3,938.16-5,430.15-2,941.76

Finding the Fourth Proportional to 3,938.16, 5,430.15 and 2,941.76

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Solution

The fourth proportional to 3,938.16, 5,430.15 and 2,941.76 is: 4,056.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.16 : 5,430.15 = 2,941.76 : x
  2. Step 2: Convert to fraction form
    3,938.16/5,430.15 = 2,941.76/x
  3. Step 3: Cross multiply
    3,938.16x = 5,430.15 × 2,941.76
  4. Step 4: Simplify right side
    3,938.16x = 15,974,170.91
  5. Step 5: Solve for x
    x = 15,974,170.91/3,938.16
  6. Step 6: Final answer
    x = 4,056.25

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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.