Home / 5,235.72-7,225.16-2,877.80

Finding the Fourth Proportional to 5,235.72, 7,225.16 and 2,877.80

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Solution

The fourth proportional to 5,235.72, 7,225.16 and 2,877.80 is: 3,971.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,235.72 : 7,225.16 = 2,877.80 : x
  2. Step 2: Convert to fraction form
    5,235.72/7,225.16 = 2,877.80/x
  3. Step 3: Cross multiply
    5,235.72x = 7,225.16 × 2,877.80
  4. Step 4: Simplify right side
    5,235.72x = 20,792,565.45
  5. Step 5: Solve for x
    x = 20,792,565.45/5,235.72
  6. Step 6: Final answer
    x = 3,971.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.