Home / 7,985.57-11,016.36-5,152.21

Finding the Fourth Proportional to 7,985.57, 11,016.36 and 5,152.21

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Solution

The fourth proportional to 7,985.57, 11,016.36 and 5,152.21 is: 7,107.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.57 : 11,016.36 = 5,152.21 : x
  2. Step 2: Convert to fraction form
    7,985.57/11,016.36 = 5,152.21/x
  3. Step 3: Cross multiply
    7,985.57x = 11,016.36 × 5,152.21
  4. Step 4: Simplify right side
    7,985.57x = 56,758,600.16
  5. Step 5: Solve for x
    x = 56,758,600.16/7,985.57
  6. Step 6: Final answer
    x = 7,107.65

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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.