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Finding the Fourth Proportional to 5,615.78, 8,413.12 and 4,697.24

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Solution

The fourth proportional to 5,615.78, 8,413.12 and 4,697.24 is: 7,037.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.78 : 8,413.12 = 4,697.24 : x
  2. Step 2: Convert to fraction form
    5,615.78/8,413.12 = 4,697.24/x
  3. Step 3: Cross multiply
    5,615.78x = 8,413.12 × 4,697.24
  4. Step 4: Simplify right side
    5,615.78x = 39,518,443.79
  5. Step 5: Solve for x
    x = 39,518,443.79/5,615.78
  6. Step 6: Final answer
    x = 7,037.04

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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.