Home / 7,715.36-11,570.20-2,783.68

Finding the Fourth Proportional to 7,715.36, 11,570.20 and 2,783.68

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Solution

The fourth proportional to 7,715.36, 11,570.20 and 2,783.68 is: 4,174.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.36 : 11,570.20 = 2,783.68 : x
  2. Step 2: Convert to fraction form
    7,715.36/11,570.20 = 2,783.68/x
  3. Step 3: Cross multiply
    7,715.36x = 11,570.20 × 2,783.68
  4. Step 4: Simplify right side
    7,715.36x = 32,207,734.34
  5. Step 5: Solve for x
    x = 32,207,734.34/7,715.36
  6. Step 6: Final answer
    x = 4,174.50

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1.5x scale

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.