Home / 7,985.70-11,020.38-4,628.76

Finding the Fourth Proportional to 7,985.70, 11,020.38 and 4,628.76

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Solution

The fourth proportional to 7,985.70, 11,020.38 and 4,628.76 is: 6,387.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.70 : 11,020.38 = 4,628.76 : x
  2. Step 2: Convert to fraction form
    7,985.70/11,020.38 = 4,628.76/x
  3. Step 3: Cross multiply
    7,985.70x = 11,020.38 × 4,628.76
  4. Step 4: Simplify right side
    7,985.70x = 51,010,694.13
  5. Step 5: Solve for x
    x = 51,010,694.13/7,985.70
  6. Step 6: Final answer
    x = 6,387.75

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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.