Home / 7,742.21-10,678.78-4,759.72

Finding the Fourth Proportional to 7,742.21, 10,678.78 and 4,759.72

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Solution

The fourth proportional to 7,742.21, 10,678.78 and 4,759.72 is: 6,565.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.21 : 10,678.78 = 4,759.72 : x
  2. Step 2: Convert to fraction form
    7,742.21/10,678.78 = 4,759.72/x
  3. Step 3: Cross multiply
    7,742.21x = 10,678.78 × 4,759.72
  4. Step 4: Simplify right side
    7,742.21x = 50,828,002.74
  5. Step 5: Solve for x
    x = 50,828,002.74/7,742.21
  6. Step 6: Final answer
    x = 6,565.05

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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.