Home / 5,430.04-8,142.74-3,091.15

Finding the Fourth Proportional to 5,430.04, 8,142.74 and 3,091.15

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Solution

The fourth proportional to 5,430.04, 8,142.74 and 3,091.15 is: 4,635.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.04 : 8,142.74 = 3,091.15 : x
  2. Step 2: Convert to fraction form
    5,430.04/8,142.74 = 3,091.15/x
  3. Step 3: Cross multiply
    5,430.04x = 8,142.74 × 3,091.15
  4. Step 4: Simplify right side
    5,430.04x = 25,170,408.65
  5. Step 5: Solve for x
    x = 25,170,408.65/5,430.04
  6. Step 6: Final answer
    x = 4,635.40

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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.