Home / 1,407.24-2,110.80-637.74

Finding the Fourth Proportional to 1,407.24, 2,110.80 and 637.74

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Solution

The fourth proportional to 1,407.24, 2,110.80 and 637.74 is: 956.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407.24 : 2,110.80 = 637.74 : x
  2. Step 2: Convert to fraction form
    1,407.24/2,110.80 = 637.74/x
  3. Step 3: Cross multiply
    1,407.24x = 2,110.80 × 637.74
  4. Step 4: Simplify right side
    1,407.24x = 1,346,141.59
  5. Step 5: Solve for x
    x = 1,346,141.59/1,407.24
  6. Step 6: Final answer
    x = 956.58

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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.