Home / 5,487.12-7,521.40-5,413.28

Finding the Fourth Proportional to 5,487.12, 7,521.40 and 5,413.28

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Solution

The fourth proportional to 5,487.12, 7,521.40 and 5,413.28 is: 7,420.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.12 : 7,521.40 = 5,413.28 : x
  2. Step 2: Convert to fraction form
    5,487.12/7,521.40 = 5,413.28/x
  3. Step 3: Cross multiply
    5,487.12x = 7,521.40 × 5,413.28
  4. Step 4: Simplify right side
    5,487.12x = 40,715,444.19
  5. Step 5: Solve for x
    x = 40,715,444.19/5,487.12
  6. Step 6: Final answer
    x = 7,420.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.