Home / 7,985.12-11,019.51-4,400.19

Finding the Fourth Proportional to 7,985.12, 11,019.51 and 4,400.19

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Solution

The fourth proportional to 7,985.12, 11,019.51 and 4,400.19 is: 6,072.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.12 : 11,019.51 = 4,400.19 : x
  2. Step 2: Convert to fraction form
    7,985.12/11,019.51 = 4,400.19/x
  3. Step 3: Cross multiply
    7,985.12x = 11,019.51 × 4,400.19
  4. Step 4: Simplify right side
    7,985.12x = 48,487,937.71
  5. Step 5: Solve for x
    x = 48,487,937.71/7,985.12
  6. Step 6: Final answer
    x = 6,072.29

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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.