Home / 1,888.20-2,826.70-1,403.40

Finding the Fourth Proportional to 1,888.20, 2,826.70 and 1,403.40

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Solution

The fourth proportional to 1,888.20, 2,826.70 and 1,403.40 is: 2,100.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888.20 : 2,826.70 = 1,403.40 : x
  2. Step 2: Convert to fraction form
    1,888.20/2,826.70 = 1,403.40/x
  3. Step 3: Cross multiply
    1,888.20x = 2,826.70 × 1,403.40
  4. Step 4: Simplify right side
    1,888.20x = 3,966,990.78
  5. Step 5: Solve for x
    x = 3,966,990.78/1,888.20
  6. Step 6: Final answer
    x = 2,100.94

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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.