Home / 7,715.80-10,647.81-4,358.62

Finding the Fourth Proportional to 7,715.80, 10,647.81 and 4,358.62

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Solution

The fourth proportional to 7,715.80, 10,647.81 and 4,358.62 is: 6,014.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.80 : 10,647.81 = 4,358.62 : x
  2. Step 2: Convert to fraction form
    7,715.80/10,647.81 = 4,358.62/x
  3. Step 3: Cross multiply
    7,715.80x = 10,647.81 × 4,358.62
  4. Step 4: Simplify right side
    7,715.80x = 46,409,757.62
  5. Step 5: Solve for x
    x = 46,409,757.62/7,715.80
  6. Step 6: Final answer
    x = 6,014.90

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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.