Home / 5,475.30-7,555.80-3,085.40

Finding the Fourth Proportional to 5,475.30, 7,555.80 and 3,085.40

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Solution

The fourth proportional to 5,475.30, 7,555.80 and 3,085.40 is: 4,257.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475.30 : 7,555.80 = 3,085.40 : x
  2. Step 2: Convert to fraction form
    5,475.30/7,555.80 = 3,085.40/x
  3. Step 3: Cross multiply
    5,475.30x = 7,555.80 × 3,085.40
  4. Step 4: Simplify right side
    5,475.30x = 23,312,665.32
  5. Step 5: Solve for x
    x = 23,312,665.32/5,475.30
  6. Step 6: Final answer
    x = 4,257.79

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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.