Home / 7,857.13-10,842.90-4,320.40

Finding the Fourth Proportional to 7,857.13, 10,842.90 and 4,320.40

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Solution

The fourth proportional to 7,857.13, 10,842.90 and 4,320.40 is: 5,962.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.13 : 10,842.90 = 4,320.40 : x
  2. Step 2: Convert to fraction form
    7,857.13/10,842.90 = 4,320.40/x
  3. Step 3: Cross multiply
    7,857.13x = 10,842.90 × 4,320.40
  4. Step 4: Simplify right side
    7,857.13x = 46,845,665.16
  5. Step 5: Solve for x
    x = 46,845,665.16/7,857.13
  6. Step 6: Final answer
    x = 5,962.19

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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.