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Finding the Fourth Proportional to 4,988.52, 7,483.95 and 1,478.55

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Solution

The fourth proportional to 4,988.52, 7,483.95 and 1,478.55 is: 2,218.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.52 : 7,483.95 = 1,478.55 : x
  2. Step 2: Convert to fraction form
    4,988.52/7,483.95 = 1,478.55/x
  3. Step 3: Cross multiply
    4,988.52x = 7,483.95 × 1,478.55
  4. Step 4: Simplify right side
    4,988.52x = 11,065,413.93
  5. Step 5: Solve for x
    x = 11,065,413.93/4,988.52
  6. Step 6: Final answer
    x = 2,218.18

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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.