Home / 5,474.80-7,555.21-3,117.40

Finding the Fourth Proportional to 5,474.80, 7,555.21 and 3,117.40

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Solution

The fourth proportional to 5,474.80, 7,555.21 and 3,117.40 is: 4,302.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,474.80 : 7,555.21 = 3,117.40 : x
  2. Step 2: Convert to fraction form
    5,474.80/7,555.21 = 3,117.40/x
  3. Step 3: Cross multiply
    5,474.80x = 7,555.21 × 3,117.40
  4. Step 4: Simplify right side
    5,474.80x = 23,552,611.65
  5. Step 5: Solve for x
    x = 23,552,611.65/5,474.80
  6. Step 6: Final answer
    x = 4,302.00

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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.