Home / 5,489.88-7,574.16-3,130.32

Finding the Fourth Proportional to 5,489.88, 7,574.16 and 3,130.32

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Solution

The fourth proportional to 5,489.88, 7,574.16 and 3,130.32 is: 4,318.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.88 : 7,574.16 = 3,130.32 : x
  2. Step 2: Convert to fraction form
    5,489.88/7,574.16 = 3,130.32/x
  3. Step 3: Cross multiply
    5,489.88x = 7,574.16 × 3,130.32
  4. Step 4: Simplify right side
    5,489.88x = 23,709,544.53
  5. Step 5: Solve for x
    x = 23,709,544.53/5,489.88
  6. Step 6: Final answer
    x = 4,318.77

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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.