Home / 7,578.18-10,457.70-4,220.88

Finding the Fourth Proportional to 7,578.18, 10,457.70 and 4,220.88

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Solution

The fourth proportional to 7,578.18, 10,457.70 and 4,220.88 is: 5,824.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.18 : 10,457.70 = 4,220.88 : x
  2. Step 2: Convert to fraction form
    7,578.18/10,457.70 = 4,220.88/x
  3. Step 3: Cross multiply
    7,578.18x = 10,457.70 × 4,220.88
  4. Step 4: Simplify right side
    7,578.18x = 44,140,696.78
  5. Step 5: Solve for x
    x = 44,140,696.78/7,578.18
  6. Step 6: Final answer
    x = 5,824.71

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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.