Home / 3,117.47-4,301.36-1,857.72

Finding the Fourth Proportional to 3,117.47, 4,301.36 and 1,857.72

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Solution

The fourth proportional to 3,117.47, 4,301.36 and 1,857.72 is: 2,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.47 : 4,301.36 = 1,857.72 : x
  2. Step 2: Convert to fraction form
    3,117.47/4,301.36 = 1,857.72/x
  3. Step 3: Cross multiply
    3,117.47x = 4,301.36 × 1,857.72
  4. Step 4: Simplify right side
    3,117.47x = 7,990,722.50
  5. Step 5: Solve for x
    x = 7,990,722.50/3,117.47
  6. Step 6: Final answer
    x = 2,563.21

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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.