Home / 7,867.40-11,801.10-2,870.15

Finding the Fourth Proportional to 7,867.40, 11,801.10 and 2,870.15

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Solution

The fourth proportional to 7,867.40, 11,801.10 and 2,870.15 is: 4,305.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,867.40 : 11,801.10 = 2,870.15 : x
  2. Step 2: Convert to fraction form
    7,867.40/11,801.10 = 2,870.15/x
  3. Step 3: Cross multiply
    7,867.40x = 11,801.10 × 2,870.15
  4. Step 4: Simplify right side
    7,867.40x = 33,870,868.16
  5. Step 5: Solve for x
    x = 33,870,868.16/7,867.40
  6. Step 6: Final answer
    x = 4,305.22

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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.