Home / 4,715.48-7,074.28-1,428.60

Finding the Fourth Proportional to 4,715.48, 7,074.28 and 1,428.60

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Solution

The fourth proportional to 4,715.48, 7,074.28 and 1,428.60 is: 2,143.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,715.48 : 7,074.28 = 1,428.60 : x
  2. Step 2: Convert to fraction form
    4,715.48/7,074.28 = 1,428.60/x
  3. Step 3: Cross multiply
    4,715.48x = 7,074.28 × 1,428.60
  4. Step 4: Simplify right side
    4,715.48x = 10,106,316.41
  5. Step 5: Solve for x
    x = 10,106,316.41/4,715.48
  6. Step 6: Final answer
    x = 2,143.22

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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.