Home / 3,127.50-4,315.98-1,730.28

Finding the Fourth Proportional to 3,127.50, 4,315.98 and 1,730.28

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Solution

The fourth proportional to 3,127.50, 4,315.98 and 1,730.28 is: 2,387.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.50 : 4,315.98 = 1,730.28 : x
  2. Step 2: Convert to fraction form
    3,127.50/4,315.98 = 1,730.28/x
  3. Step 3: Cross multiply
    3,127.50x = 4,315.98 × 1,730.28
  4. Step 4: Simplify right side
    3,127.50x = 7,467,853.87
  5. Step 5: Solve for x
    x = 7,467,853.87/3,127.50
  6. Step 6: Final answer
    x = 2,387.80

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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.