Home / 7,561.76-10,431.60-5,880.20

Finding the Fourth Proportional to 7,561.76, 10,431.60 and 5,880.20

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Solution

The fourth proportional to 7,561.76, 10,431.60 and 5,880.20 is: 8,111.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,561.76 : 10,431.60 = 5,880.20 : x
  2. Step 2: Convert to fraction form
    7,561.76/10,431.60 = 5,880.20/x
  3. Step 3: Cross multiply
    7,561.76x = 10,431.60 × 5,880.20
  4. Step 4: Simplify right side
    7,561.76x = 61,339,894.32
  5. Step 5: Solve for x
    x = 61,339,894.32/7,561.76
  6. Step 6: Final answer
    x = 8,111.85

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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.