Home / 7,791.12-10,749.72-4,808.40

Finding the Fourth Proportional to 7,791.12, 10,749.72 and 4,808.40

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Solution

The fourth proportional to 7,791.12, 10,749.72 and 4,808.40 is: 6,634.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.12 : 10,749.72 = 4,808.40 : x
  2. Step 2: Convert to fraction form
    7,791.12/10,749.72 = 4,808.40/x
  3. Step 3: Cross multiply
    7,791.12x = 10,749.72 × 4,808.40
  4. Step 4: Simplify right side
    7,791.12x = 51,688,953.65
  5. Step 5: Solve for x
    x = 51,688,953.65/7,791.12
  6. Step 6: Final answer
    x = 6,634.34

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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.