Home / 7,825.12-10,796.64-4,842.40

Finding the Fourth Proportional to 7,825.12, 10,796.64 and 4,842.40

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Solution

The fourth proportional to 7,825.12, 10,796.64 and 4,842.40 is: 6,681.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,825.12 : 10,796.64 = 4,842.40 : x
  2. Step 2: Convert to fraction form
    7,825.12/10,796.64 = 4,842.40/x
  3. Step 3: Cross multiply
    7,825.12x = 10,796.64 × 4,842.40
  4. Step 4: Simplify right side
    7,825.12x = 52,281,649.54
  5. Step 5: Solve for x
    x = 52,281,649.54/7,825.12
  6. Step 6: Final answer
    x = 6,681.26

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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.