Home / 7,817.19-10,785.47-4,672.77

Finding the Fourth Proportional to 7,817.19, 10,785.47 and 4,672.77

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Solution

The fourth proportional to 7,817.19, 10,785.47 and 4,672.77 is: 6,447.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.19 : 10,785.47 = 4,672.77 : x
  2. Step 2: Convert to fraction form
    7,817.19/10,785.47 = 4,672.77/x
  3. Step 3: Cross multiply
    7,817.19x = 10,785.47 × 4,672.77
  4. Step 4: Simplify right side
    7,817.19x = 50,397,997.29
  5. Step 5: Solve for x
    x = 50,397,997.29/7,817.19
  6. Step 6: Final answer
    x = 6,447.07

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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.