Home / 1,580.31-2,370.53-426.06

Finding the Fourth Proportional to 1,580.31, 2,370.53 and 426.06

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Solution

The fourth proportional to 1,580.31, 2,370.53 and 426.06 is: 639.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.31 : 2,370.53 = 426.06 : x
  2. Step 2: Convert to fraction form
    1,580.31/2,370.53 = 426.06/x
  3. Step 3: Cross multiply
    1,580.31x = 2,370.53 × 426.06
  4. Step 4: Simplify right side
    1,580.31x = 1,009,989.08
  5. Step 5: Solve for x
    x = 1,009,989.08/1,580.31
  6. Step 6: Final answer
    x = 639.11

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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.