Home / 4,978.70-6,870.33-2,740.14

Finding the Fourth Proportional to 4,978.70, 6,870.33 and 2,740.14

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Solution

The fourth proportional to 4,978.70, 6,870.33 and 2,740.14 is: 3,781.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978.70 : 6,870.33 = 2,740.14 : x
  2. Step 2: Convert to fraction form
    4,978.70/6,870.33 = 2,740.14/x
  3. Step 3: Cross multiply
    4,978.70x = 6,870.33 × 2,740.14
  4. Step 4: Simplify right side
    4,978.70x = 18,825,666.05
  5. Step 5: Solve for x
    x = 18,825,666.05/4,978.70
  6. Step 6: Final answer
    x = 3,781.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.