Home / 2,188.76-3,021.53-1,403.28

Finding the Fourth Proportional to 2,188.76, 3,021.53 and 1,403.28

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Solution

The fourth proportional to 2,188.76, 3,021.53 and 1,403.28 is: 1,937.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.76 : 3,021.53 = 1,403.28 : x
  2. Step 2: Convert to fraction form
    2,188.76/3,021.53 = 1,403.28/x
  3. Step 3: Cross multiply
    2,188.76x = 3,021.53 × 1,403.28
  4. Step 4: Simplify right side
    2,188.76x = 4,240,045.60
  5. Step 5: Solve for x
    x = 4,240,045.60/2,188.76
  6. Step 6: Final answer
    x = 1,937.20

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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.