Home / 5,413.17-8,120.15-1,715.66

Finding the Fourth Proportional to 5,413.17, 8,120.15 and 1,715.66

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Solution

The fourth proportional to 5,413.17, 8,120.15 and 1,715.66 is: 2,573.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.17 : 8,120.15 = 1,715.66 : x
  2. Step 2: Convert to fraction form
    5,413.17/8,120.15 = 1,715.66/x
  3. Step 3: Cross multiply
    5,413.17x = 8,120.15 × 1,715.66
  4. Step 4: Simplify right side
    5,413.17x = 13,931,416.55
  5. Step 5: Solve for x
    x = 13,931,416.55/5,413.17
  6. Step 6: Final answer
    x = 2,573.62

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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.