Home / 1,521.48-2,285.72-1,420.34

Finding the Fourth Proportional to 1,521.48, 2,285.72 and 1,420.34

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Solution

The fourth proportional to 1,521.48, 2,285.72 and 1,420.34 is: 2,133.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.48 : 2,285.72 = 1,420.34 : x
  2. Step 2: Convert to fraction form
    1,521.48/2,285.72 = 1,420.34/x
  3. Step 3: Cross multiply
    1,521.48x = 2,285.72 × 1,420.34
  4. Step 4: Simplify right side
    1,521.48x = 3,246,486.34
  5. Step 5: Solve for x
    x = 3,246,486.34/1,521.48
  6. Step 6: Final answer
    x = 2,133.76

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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.