Home / 1,420.27-2,130.64-598.78

Finding the Fourth Proportional to 1,420.27, 2,130.64 and 598.78

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Solution

The fourth proportional to 1,420.27, 2,130.64 and 598.78 is: 898.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420.27 : 2,130.64 = 598.78 : x
  2. Step 2: Convert to fraction form
    1,420.27/2,130.64 = 598.78/x
  3. Step 3: Cross multiply
    1,420.27x = 2,130.64 × 598.78
  4. Step 4: Simplify right side
    1,420.27x = 1,275,784.62
  5. Step 5: Solve for x
    x = 1,275,784.62/1,420.27
  6. Step 6: Final answer
    x = 898.27

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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.