Home / 7,857.12-10,842.99-4,320.39

Finding the Fourth Proportional to 7,857.12, 10,842.99 and 4,320.39

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Solution

The fourth proportional to 7,857.12, 10,842.99 and 4,320.39 is: 5,962.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.12 : 10,842.99 = 4,320.39 : x
  2. Step 2: Convert to fraction form
    7,857.12/10,842.99 = 4,320.39/x
  3. Step 3: Cross multiply
    7,857.12x = 10,842.99 × 4,320.39
  4. Step 4: Simplify right side
    7,857.12x = 46,845,945.57
  5. Step 5: Solve for x
    x = 46,845,945.57/7,857.12
  6. Step 6: Final answer
    x = 5,962.23

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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.