Home / 3,117.46-4,302.06-1,720.20

Finding the Fourth Proportional to 3,117.46, 4,302.06 and 1,720.20

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Solution

The fourth proportional to 3,117.46, 4,302.06 and 1,720.20 is: 2,373.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.46 : 4,302.06 = 1,720.20 : x
  2. Step 2: Convert to fraction form
    3,117.46/4,302.06 = 1,720.20/x
  3. Step 3: Cross multiply
    3,117.46x = 4,302.06 × 1,720.20
  4. Step 4: Simplify right side
    3,117.46x = 7,400,403.61
  5. Step 5: Solve for x
    x = 7,400,403.61/3,117.46
  6. Step 6: Final answer
    x = 2,373.86

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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.