Home / 1,400.04-2,100.47-426.15

Finding the Fourth Proportional to 1,400.04, 2,100.47 and 426.15

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Solution

The fourth proportional to 1,400.04, 2,100.47 and 426.15 is: 639.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.04 : 2,100.47 = 426.15 : x
  2. Step 2: Convert to fraction form
    1,400.04/2,100.47 = 426.15/x
  3. Step 3: Cross multiply
    1,400.04x = 2,100.47 × 426.15
  4. Step 4: Simplify right side
    1,400.04x = 895,113.16
  5. Step 5: Solve for x
    x = 895,113.16/1,400.04
  6. Step 6: Final answer
    x = 639.35

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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.