Home / 5,185.87-7,778.78-1,488.01

Finding the Fourth Proportional to 5,185.87, 7,778.78 and 1,488.01

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Solution

The fourth proportional to 5,185.87, 7,778.78 and 1,488.01 is: 2,232.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.87 : 7,778.78 = 1,488.01 : x
  2. Step 2: Convert to fraction form
    5,185.87/7,778.78 = 1,488.01/x
  3. Step 3: Cross multiply
    5,185.87x = 7,778.78 × 1,488.01
  4. Step 4: Simplify right side
    5,185.87x = 11,574,863.53
  5. Step 5: Solve for x
    x = 11,574,863.53/5,185.87
  6. Step 6: Final answer
    x = 2,232.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.