Home / 8,270.51-12,378.42-4,990.01

Finding the Fourth Proportional to 8,270.51, 12,378.42 and 4,990.01

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Solution

The fourth proportional to 8,270.51, 12,378.42 and 4,990.01 is: 7,468.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,270.51 : 12,378.42 = 4,990.01 : x
  2. Step 2: Convert to fraction form
    8,270.51/12,378.42 = 4,990.01/x
  3. Step 3: Cross multiply
    8,270.51x = 12,378.42 × 4,990.01
  4. Step 4: Simplify right side
    8,270.51x = 61,768,377.69
  5. Step 5: Solve for x
    x = 61,768,377.69/8,270.51
  6. Step 6: Final answer
    x = 7,468.51

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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.