Home / 3,128.59-4,695.15-2,309.05

Finding the Fourth Proportional to 3,128.59, 4,695.15 and 2,309.05

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Solution

The fourth proportional to 3,128.59, 4,695.15 and 2,309.05 is: 3,465.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.59 : 4,695.15 = 2,309.05 : x
  2. Step 2: Convert to fraction form
    3,128.59/4,695.15 = 2,309.05/x
  3. Step 3: Cross multiply
    3,128.59x = 4,695.15 × 2,309.05
  4. Step 4: Simplify right side
    3,128.59x = 10,841,336.11
  5. Step 5: Solve for x
    x = 10,841,336.11/3,128.59
  6. Step 6: Final answer
    x = 3,465.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.