Home / 1,416.91-2,124.73-429.35

Finding the Fourth Proportional to 1,416.91, 2,124.73 and 429.35

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Solution

The fourth proportional to 1,416.91, 2,124.73 and 429.35 is: 643.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.91 : 2,124.73 = 429.35 : x
  2. Step 2: Convert to fraction form
    1,416.91/2,124.73 = 429.35/x
  3. Step 3: Cross multiply
    1,416.91x = 2,124.73 × 429.35
  4. Step 4: Simplify right side
    1,416.91x = 912,252.83
  5. Step 5: Solve for x
    x = 912,252.83/1,416.91
  6. Step 6: Final answer
    x = 643.83

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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.