Home / 1,628.10-2,442.15-923.40

Finding the Fourth Proportional to 1,628.10, 2,442.15 and 923.40

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Solution

The fourth proportional to 1,628.10, 2,442.15 and 923.40 is: 1,385.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.10 : 2,442.15 = 923.40 : x
  2. Step 2: Convert to fraction form
    1,628.10/2,442.15 = 923.40/x
  3. Step 3: Cross multiply
    1,628.10x = 2,442.15 × 923.40
  4. Step 4: Simplify right side
    1,628.10x = 2,255,081.31
  5. Step 5: Solve for x
    x = 2,255,081.31/1,628.10
  6. Step 6: Final answer
    x = 1,385.10

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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.