Home / 10,478.58-15,718.61-3,904.75

Finding the Fourth Proportional to 10,478.58, 15,718.61 and 3,904.75

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Solution

The fourth proportional to 10,478.58, 15,718.61 and 3,904.75 is: 5,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.58 : 15,718.61 = 3,904.75 : x
  2. Step 2: Convert to fraction form
    10,478.58/15,718.61 = 3,904.75/x
  3. Step 3: Cross multiply
    10,478.58x = 15,718.61 × 3,904.75
  4. Step 4: Simplify right side
    10,478.58x = 61,377,242.40
  5. Step 5: Solve for x
    x = 61,377,242.40/10,478.58
  6. Step 6: Final answer
    x = 5,857.40

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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.