Home / 3,127.70-4,316.06-1,730.45

Finding the Fourth Proportional to 3,127.70, 4,316.06 and 1,730.45

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Solution

The fourth proportional to 3,127.70, 4,316.06 and 1,730.45 is: 2,387.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.70 : 4,316.06 = 1,730.45 : x
  2. Step 2: Convert to fraction form
    3,127.70/4,316.06 = 1,730.45/x
  3. Step 3: Cross multiply
    3,127.70x = 4,316.06 × 1,730.45
  4. Step 4: Simplify right side
    3,127.70x = 7,468,695.79
  5. Step 5: Solve for x
    x = 7,468,695.79/3,127.70
  6. Step 6: Final answer
    x = 2,387.92

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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.