Home / 4,915.80-7,373.70-2,145.60

Finding the Fourth Proportional to 4,915.80, 7,373.70 and 2,145.60

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Solution

The fourth proportional to 4,915.80, 7,373.70 and 2,145.60 is: 3,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.80 : 7,373.70 = 2,145.60 : x
  2. Step 2: Convert to fraction form
    4,915.80/7,373.70 = 2,145.60/x
  3. Step 3: Cross multiply
    4,915.80x = 7,373.70 × 2,145.60
  4. Step 4: Simplify right side
    4,915.80x = 15,821,010.72
  5. Step 5: Solve for x
    x = 15,821,010.72/4,915.80
  6. Step 6: Final answer
    x = 3,218.40

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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.