Home / 1,476.31-2,038.16-979.63

Finding the Fourth Proportional to 1,476.31, 2,038.16 and 979.63

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Solution

The fourth proportional to 1,476.31, 2,038.16 and 979.63 is: 1,352.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,476.31 : 2,038.16 = 979.63 : x
  2. Step 2: Convert to fraction form
    1,476.31/2,038.16 = 979.63/x
  3. Step 3: Cross multiply
    1,476.31x = 2,038.16 × 979.63
  4. Step 4: Simplify right side
    1,476.31x = 1,996,642.68
  5. Step 5: Solve for x
    x = 1,996,642.68/1,476.31
  6. Step 6: Final answer
    x = 1,352.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.