Home / 7,715.32-11,565.69-2,783.63

Finding the Fourth Proportional to 7,715.32, 11,565.69 and 2,783.63

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Solution

The fourth proportional to 7,715.32, 11,565.69 and 2,783.63 is: 4,172.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.32 : 11,565.69 = 2,783.63 : x
  2. Step 2: Convert to fraction form
    7,715.32/11,565.69 = 2,783.63/x
  3. Step 3: Cross multiply
    7,715.32x = 11,565.69 × 2,783.63
  4. Step 4: Simplify right side
    7,715.32x = 32,194,620.13
  5. Step 5: Solve for x
    x = 32,194,620.13/7,715.32
  6. Step 6: Final answer
    x = 4,172.82

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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.