Home / 7,578.18-10,458.54-4,220.88

Finding the Fourth Proportional to 7,578.18, 10,458.54 and 4,220.88

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Solution

The fourth proportional to 7,578.18, 10,458.54 and 4,220.88 is: 5,825.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.18 : 10,458.54 = 4,220.88 : x
  2. Step 2: Convert to fraction form
    7,578.18/10,458.54 = 4,220.88/x
  3. Step 3: Cross multiply
    7,578.18x = 10,458.54 × 4,220.88
  4. Step 4: Simplify right side
    7,578.18x = 44,144,242.32
  5. Step 5: Solve for x
    x = 44,144,242.32/7,578.18
  6. Step 6: Final answer
    x = 5,825.18

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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.