Home / 1,417.16-2,125.75-429.98

Finding the Fourth Proportional to 1,417.16, 2,125.75 and 429.98

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Solution

The fourth proportional to 1,417.16, 2,125.75 and 429.98 is: 644.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.16 : 2,125.75 = 429.98 : x
  2. Step 2: Convert to fraction form
    1,417.16/2,125.75 = 429.98/x
  3. Step 3: Cross multiply
    1,417.16x = 2,125.75 × 429.98
  4. Step 4: Simplify right side
    1,417.16x = 914,039.73
  5. Step 5: Solve for x
    x = 914,039.73/1,417.16
  6. Step 6: Final answer
    x = 644.98

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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.