Home / 1,417.51-2,126.47-443.69

Finding the Fourth Proportional to 1,417.51, 2,126.47 and 443.69

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Solution

The fourth proportional to 1,417.51, 2,126.47 and 443.69 is: 665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.51 : 2,126.47 = 443.69 : x
  2. Step 2: Convert to fraction form
    1,417.51/2,126.47 = 443.69/x
  3. Step 3: Cross multiply
    1,417.51x = 2,126.47 × 443.69
  4. Step 4: Simplify right side
    1,417.51x = 943,493.47
  5. Step 5: Solve for x
    x = 943,493.47/1,417.51
  6. Step 6: Final answer
    x = 665.60

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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.