Home / 5,278.19-7,280.72-3,485.68

Finding the Fourth Proportional to 5,278.19, 7,280.72 and 3,485.68

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Solution

The fourth proportional to 5,278.19, 7,280.72 and 3,485.68 is: 4,808.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.19 : 7,280.72 = 3,485.68 : x
  2. Step 2: Convert to fraction form
    5,278.19/7,280.72 = 3,485.68/x
  3. Step 3: Cross multiply
    5,278.19x = 7,280.72 × 3,485.68
  4. Step 4: Simplify right side
    5,278.19x = 25,378,237.53
  5. Step 5: Solve for x
    x = 25,378,237.53/5,278.19
  6. Step 6: Final answer
    x = 4,808.14

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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.