Home / 1,420.28-2,113.66-1,368.44

Finding the Fourth Proportional to 1,420.28, 2,113.66 and 1,368.44

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Solution

The fourth proportional to 1,420.28, 2,113.66 and 1,368.44 is: 2,036.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420.28 : 2,113.66 = 1,368.44 : x
  2. Step 2: Convert to fraction form
    1,420.28/2,113.66 = 1,368.44/x
  3. Step 3: Cross multiply
    1,420.28x = 2,113.66 × 1,368.44
  4. Step 4: Simplify right side
    1,420.28x = 2,892,416.89
  5. Step 5: Solve for x
    x = 2,892,416.89/1,420.28
  6. Step 6: Final answer
    x = 2,036.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.