Home / 7,715.10-10,647.42-4,358.28

Finding the Fourth Proportional to 7,715.10, 10,647.42 and 4,358.28

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Solution

The fourth proportional to 7,715.10, 10,647.42 and 4,358.28 is: 6,014.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.10 : 10,647.42 = 4,358.28 : x
  2. Step 2: Convert to fraction form
    7,715.10/10,647.42 = 4,358.28/x
  3. Step 3: Cross multiply
    7,715.10x = 10,647.42 × 4,358.28
  4. Step 4: Simplify right side
    7,715.10x = 46,404,468.05
  5. Step 5: Solve for x
    x = 46,404,468.05/7,715.10
  6. Step 6: Final answer
    x = 6,014.76

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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.