Home / 7,678.24-10,588.65-7,112.32

Finding the Fourth Proportional to 7,678.24, 10,588.65 and 7,112.32

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Solution

The fourth proportional to 7,678.24, 10,588.65 and 7,112.32 is: 9,808.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.24 : 10,588.65 = 7,112.32 : x
  2. Step 2: Convert to fraction form
    7,678.24/10,588.65 = 7,112.32/x
  3. Step 3: Cross multiply
    7,678.24x = 10,588.65 × 7,112.32
  4. Step 4: Simplify right side
    7,678.24x = 75,309,867.17
  5. Step 5: Solve for x
    x = 75,309,867.17/7,678.24
  6. Step 6: Final answer
    x = 9,808.22

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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.