Home / 3,018.71-4,528.20-938.77

Finding the Fourth Proportional to 3,018.71, 4,528.20 and 938.77

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Solution

The fourth proportional to 3,018.71, 4,528.20 and 938.77 is: 1,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.71 : 4,528.20 = 938.77 : x
  2. Step 2: Convert to fraction form
    3,018.71/4,528.20 = 938.77/x
  3. Step 3: Cross multiply
    3,018.71x = 4,528.20 × 938.77
  4. Step 4: Simplify right side
    3,018.71x = 4,250,938.31
  5. Step 5: Solve for x
    x = 4,250,938.31/3,018.71
  6. Step 6: Final answer
    x = 1,408.20

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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.