Home / 10,391.67-15,587.78-3,813.57

Finding the Fourth Proportional to 10,391.67, 15,587.78 and 3,813.57

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Solution

The fourth proportional to 10,391.67, 15,587.78 and 3,813.57 is: 5,720.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.67 : 15,587.78 = 3,813.57 : x
  2. Step 2: Convert to fraction form
    10,391.67/15,587.78 = 3,813.57/x
  3. Step 3: Cross multiply
    10,391.67x = 15,587.78 × 3,813.57
  4. Step 4: Simplify right side
    10,391.67x = 59,445,071.11
  5. Step 5: Solve for x
    x = 59,445,071.11/10,391.67
  6. Step 6: Final answer
    x = 5,720.45

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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.