Home / 7,989.49-11,020.35-5,300.65

Finding the Fourth Proportional to 7,989.49, 11,020.35 and 5,300.65

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Solution

The fourth proportional to 7,989.49, 11,020.35 and 5,300.65 is: 7,311.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.49 : 11,020.35 = 5,300.65 : x
  2. Step 2: Convert to fraction form
    7,989.49/11,020.35 = 5,300.65/x
  3. Step 3: Cross multiply
    7,989.49x = 11,020.35 × 5,300.65
  4. Step 4: Simplify right side
    7,989.49x = 58,415,018.23
  5. Step 5: Solve for x
    x = 58,415,018.23/7,989.49
  6. Step 6: Final answer
    x = 7,311.48

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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.