Home / 4,987.70-7,481.55-4,210.10

Finding the Fourth Proportional to 4,987.70, 7,481.55 and 4,210.10

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Solution

The fourth proportional to 4,987.70, 7,481.55 and 4,210.10 is: 6,315.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.70 : 7,481.55 = 4,210.10 : x
  2. Step 2: Convert to fraction form
    4,987.70/7,481.55 = 4,210.10/x
  3. Step 3: Cross multiply
    4,987.70x = 7,481.55 × 4,210.10
  4. Step 4: Simplify right side
    4,987.70x = 31,498,073.66
  5. Step 5: Solve for x
    x = 31,498,073.66/4,987.70
  6. Step 6: Final answer
    x = 6,315.15

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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.