Home / 10,378.07-15,565.43-2,980.85

Finding the Fourth Proportional to 10,378.07, 15,565.43 and 2,980.85

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Solution

The fourth proportional to 10,378.07, 15,565.43 and 2,980.85 is: 4,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,378.07 : 15,565.43 = 2,980.85 : x
  2. Step 2: Convert to fraction form
    10,378.07/15,565.43 = 2,980.85/x
  3. Step 3: Cross multiply
    10,378.07x = 15,565.43 × 2,980.85
  4. Step 4: Simplify right side
    10,378.07x = 46,398,258.38
  5. Step 5: Solve for x
    x = 46,398,258.38/10,378.07
  6. Step 6: Final answer
    x = 4,470.80

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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.