Home / 5,403.16-8,107.26-5,315.80

Finding the Fourth Proportional to 5,403.16, 8,107.26 and 5,315.80

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Solution

The fourth proportional to 5,403.16, 8,107.26 and 5,315.80 is: 7,976.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,403.16 : 8,107.26 = 5,315.80 : x
  2. Step 2: Convert to fraction form
    5,403.16/8,107.26 = 5,315.80/x
  3. Step 3: Cross multiply
    5,403.16x = 8,107.26 × 5,315.80
  4. Step 4: Simplify right side
    5,403.16x = 43,096,572.71
  5. Step 5: Solve for x
    x = 43,096,572.71/5,403.16
  6. Step 6: Final answer
    x = 7,976.18

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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.