Home / 3,127.42-4,315.80-1,730.16

Finding the Fourth Proportional to 3,127.42, 4,315.80 and 1,730.16

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Solution

The fourth proportional to 3,127.42, 4,315.80 and 1,730.16 is: 2,387.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.42 : 4,315.80 = 1,730.16 : x
  2. Step 2: Convert to fraction form
    3,127.42/4,315.80 = 1,730.16/x
  3. Step 3: Cross multiply
    3,127.42x = 4,315.80 × 1,730.16
  4. Step 4: Simplify right side
    3,127.42x = 7,467,024.53
  5. Step 5: Solve for x
    x = 7,467,024.53/3,127.42
  6. Step 6: Final answer
    x = 2,387.60

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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.