Home / 2,018.40-3,020.64-1,402.80

Finding the Fourth Proportional to 2,018.40, 3,020.64 and 1,402.80

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Solution

The fourth proportional to 2,018.40, 3,020.64 and 1,402.80 is: 2,099.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,018.40 : 3,020.64 = 1,402.80 : x
  2. Step 2: Convert to fraction form
    2,018.40/3,020.64 = 1,402.80/x
  3. Step 3: Cross multiply
    2,018.40x = 3,020.64 × 1,402.80
  4. Step 4: Simplify right side
    2,018.40x = 4,237,353.79
  5. Step 5: Solve for x
    x = 4,237,353.79/2,018.40
  6. Step 6: Final answer
    x = 2,099.36

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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.