Home / 5,320.56-7,980.88-2,200.08

Finding the Fourth Proportional to 5,320.56, 7,980.88 and 2,200.08

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Solution

The fourth proportional to 5,320.56, 7,980.88 and 2,200.08 is: 3,300.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.56 : 7,980.88 = 2,200.08 : x
  2. Step 2: Convert to fraction form
    5,320.56/7,980.88 = 2,200.08/x
  3. Step 3: Cross multiply
    5,320.56x = 7,980.88 × 2,200.08
  4. Step 4: Simplify right side
    5,320.56x = 17,558,574.47
  5. Step 5: Solve for x
    x = 17,558,574.47/5,320.56
  6. Step 6: Final answer
    x = 3,300.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.