Home / 1,488.74-2,241.32-1,316.36

Finding the Fourth Proportional to 1,488.74, 2,241.32 and 1,316.36

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Solution

The fourth proportional to 1,488.74, 2,241.32 and 1,316.36 is: 1,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.74 : 2,241.32 = 1,316.36 : x
  2. Step 2: Convert to fraction form
    1,488.74/2,241.32 = 1,316.36/x
  3. Step 3: Cross multiply
    1,488.74x = 2,241.32 × 1,316.36
  4. Step 4: Simplify right side
    1,488.74x = 2,950,384.00
  5. Step 5: Solve for x
    x = 2,950,384.00/1,488.74
  6. Step 6: Final answer
    x = 1,981.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.