Home / 5,428.91-8,143.31-4,340.18

Finding the Fourth Proportional to 5,428.91, 8,143.31 and 4,340.18

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Solution

The fourth proportional to 5,428.91, 8,143.31 and 4,340.18 is: 6,510.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.91 : 8,143.31 = 4,340.18 : x
  2. Step 2: Convert to fraction form
    5,428.91/8,143.31 = 4,340.18/x
  3. Step 3: Cross multiply
    5,428.91x = 8,143.31 × 4,340.18
  4. Step 4: Simplify right side
    5,428.91x = 35,343,462.40
  5. Step 5: Solve for x
    x = 35,343,462.40/5,428.91
  6. Step 6: Final answer
    x = 6,510.23

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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.