Home / 5,412.18-8,115.18-1,715.34

Finding the Fourth Proportional to 5,412.18, 8,115.18 and 1,715.34

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Solution

The fourth proportional to 5,412.18, 8,115.18 and 1,715.34 is: 2,572.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.18 : 8,115.18 = 1,715.34 : x
  2. Step 2: Convert to fraction form
    5,412.18/8,115.18 = 1,715.34/x
  3. Step 3: Cross multiply
    5,412.18x = 8,115.18 × 1,715.34
  4. Step 4: Simplify right side
    5,412.18x = 13,920,292.86
  5. Step 5: Solve for x
    x = 13,920,292.86/5,412.18
  6. Step 6: Final answer
    x = 2,572.03

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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.