Home / 7,785.24-10,742.40-4,642.44

Finding the Fourth Proportional to 7,785.24, 10,742.40 and 4,642.44

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Solution

The fourth proportional to 7,785.24, 10,742.40 and 4,642.44 is: 6,405.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,785.24 : 10,742.40 = 4,642.44 : x
  2. Step 2: Convert to fraction form
    7,785.24/10,742.40 = 4,642.44/x
  3. Step 3: Cross multiply
    7,785.24x = 10,742.40 × 4,642.44
  4. Step 4: Simplify right side
    7,785.24x = 49,870,947.46
  5. Step 5: Solve for x
    x = 49,870,947.46/7,785.24
  6. Step 6: Final answer
    x = 6,405.83

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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.