Home / 2,870.80-4,306.20-1,704.40

Finding the Fourth Proportional to 2,870.80, 4,306.20 and 1,704.40

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Solution

The fourth proportional to 2,870.80, 4,306.20 and 1,704.40 is: 2,556.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.80 : 4,306.20 = 1,704.40 : x
  2. Step 2: Convert to fraction form
    2,870.80/4,306.20 = 1,704.40/x
  3. Step 3: Cross multiply
    2,870.80x = 4,306.20 × 1,704.40
  4. Step 4: Simplify right side
    2,870.80x = 7,339,487.28
  5. Step 5: Solve for x
    x = 7,339,487.28/2,870.80
  6. Step 6: Final answer
    x = 2,556.60

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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.