Home / 8,647.40-11,933.25-4,870.55

Finding the Fourth Proportional to 8,647.40, 11,933.25 and 4,870.55

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Solution

The fourth proportional to 8,647.40, 11,933.25 and 4,870.55 is: 6,721.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.40 : 11,933.25 = 4,870.55 : x
  2. Step 2: Convert to fraction form
    8,647.40/11,933.25 = 4,870.55/x
  3. Step 3: Cross multiply
    8,647.40x = 11,933.25 × 4,870.55
  4. Step 4: Simplify right side
    8,647.40x = 58,121,490.79
  5. Step 5: Solve for x
    x = 58,121,490.79/8,647.40
  6. Step 6: Final answer
    x = 6,721.27

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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.