Home / 6,870.43-9,480.09-3,885.58

Finding the Fourth Proportional to 6,870.43, 9,480.09 and 3,885.58

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Solution

The fourth proportional to 6,870.43, 9,480.09 and 3,885.58 is: 5,361.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870.43 : 9,480.09 = 3,885.58 : x
  2. Step 2: Convert to fraction form
    6,870.43/9,480.09 = 3,885.58/x
  3. Step 3: Cross multiply
    6,870.43x = 9,480.09 × 3,885.58
  4. Step 4: Simplify right side
    6,870.43x = 36,835,648.10
  5. Step 5: Solve for x
    x = 36,835,648.10/6,870.43
  6. Step 6: Final answer
    x = 5,361.48

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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.