Home / 3,127.08-4,315-1,729.80

Finding the Fourth Proportional to 3,127.08, 4,315 and 1,729.80

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Solution

The fourth proportional to 3,127.08, 4,315 and 1,729.80 is: 2,386.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.08 : 4,315 = 1,729.80 : x
  2. Step 2: Convert to fraction form
    3,127.08/4,315 = 1,729.80/x
  3. Step 3: Cross multiply
    3,127.08x = 4,315 × 1,729.80
  4. Step 4: Simplify right side
    3,127.08x = 7,464,087
  5. Step 5: Solve for x
    x = 7,464,087/3,127.08
  6. Step 6: Final answer
    x = 2,386.92

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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.