Home / 2,812.06-4,220.70-1,888.30

Finding the Fourth Proportional to 2,812.06, 4,220.70 and 1,888.30

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Solution

The fourth proportional to 2,812.06, 4,220.70 and 1,888.30 is: 2,834.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.06 : 4,220.70 = 1,888.30 : x
  2. Step 2: Convert to fraction form
    2,812.06/4,220.70 = 1,888.30/x
  3. Step 3: Cross multiply
    2,812.06x = 4,220.70 × 1,888.30
  4. Step 4: Simplify right side
    2,812.06x = 7,969,947.81
  5. Step 5: Solve for x
    x = 7,969,947.81/2,812.06
  6. Step 6: Final answer
    x = 2,834.20

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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.