Home / 4,780.40-7,172.43-2,315.03

Finding the Fourth Proportional to 4,780.40, 7,172.43 and 2,315.03

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Solution

The fourth proportional to 4,780.40, 7,172.43 and 2,315.03 is: 3,473.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.40 : 7,172.43 = 2,315.03 : x
  2. Step 2: Convert to fraction form
    4,780.40/7,172.43 = 2,315.03/x
  3. Step 3: Cross multiply
    4,780.40x = 7,172.43 × 2,315.03
  4. Step 4: Simplify right side
    4,780.40x = 16,604,354.76
  5. Step 5: Solve for x
    x = 16,604,354.76/4,780.40
  6. Step 6: Final answer
    x = 3,473.43

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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.