Home / 5,278.64-7,281.35-3,486.13

Finding the Fourth Proportional to 5,278.64, 7,281.35 and 3,486.13

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Solution

The fourth proportional to 5,278.64, 7,281.35 and 3,486.13 is: 4,808.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.64 : 7,281.35 = 3,486.13 : x
  2. Step 2: Convert to fraction form
    5,278.64/7,281.35 = 3,486.13/x
  3. Step 3: Cross multiply
    5,278.64x = 7,281.35 × 3,486.13
  4. Step 4: Simplify right side
    5,278.64x = 25,383,678.84
  5. Step 5: Solve for x
    x = 25,383,678.84/5,278.64
  6. Step 6: Final answer
    x = 4,808.75

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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.