Home / 2,988.45-4,480.83-1,428.93

Finding the Fourth Proportional to 2,988.45, 4,480.83 and 1,428.93

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Solution

The fourth proportional to 2,988.45, 4,480.83 and 1,428.93 is: 2,142.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.45 : 4,480.83 = 1,428.93 : x
  2. Step 2: Convert to fraction form
    2,988.45/4,480.83 = 1,428.93/x
  3. Step 3: Cross multiply
    2,988.45x = 4,480.83 × 1,428.93
  4. Step 4: Simplify right side
    2,988.45x = 6,402,792.41
  5. Step 5: Solve for x
    x = 6,402,792.41/2,988.45
  6. Step 6: Final answer
    x = 2,142.51

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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.