Home / 5,430.60-8,145.90-5,102.55

Finding the Fourth Proportional to 5,430.60, 8,145.90 and 5,102.55

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Solution

The fourth proportional to 5,430.60, 8,145.90 and 5,102.55 is: 7,653.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.60 : 8,145.90 = 5,102.55 : x
  2. Step 2: Convert to fraction form
    5,430.60/8,145.90 = 5,102.55/x
  3. Step 3: Cross multiply
    5,430.60x = 8,145.90 × 5,102.55
  4. Step 4: Simplify right side
    5,430.60x = 41,564,862.05
  5. Step 5: Solve for x
    x = 41,564,862.05/5,430.60
  6. Step 6: Final answer
    x = 7,653.83

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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.