Home / 1,423.90-2,135.94-1,038.34

Finding the Fourth Proportional to 1,423.90, 2,135.94 and 1,038.34

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Solution

The fourth proportional to 1,423.90, 2,135.94 and 1,038.34 is: 1,557.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.90 : 2,135.94 = 1,038.34 : x
  2. Step 2: Convert to fraction form
    1,423.90/2,135.94 = 1,038.34/x
  3. Step 3: Cross multiply
    1,423.90x = 2,135.94 × 1,038.34
  4. Step 4: Simplify right side
    1,423.90x = 2,217,831.94
  5. Step 5: Solve for x
    x = 2,217,831.94/1,423.90
  6. Step 6: Final answer
    x = 1,557.58

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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.