Home / 1,511.29-2,266.66-415.39

Finding the Fourth Proportional to 1,511.29, 2,266.66 and 415.39

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Solution

The fourth proportional to 1,511.29, 2,266.66 and 415.39 is: 623.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.29 : 2,266.66 = 415.39 : x
  2. Step 2: Convert to fraction form
    1,511.29/2,266.66 = 415.39/x
  3. Step 3: Cross multiply
    1,511.29x = 2,266.66 × 415.39
  4. Step 4: Simplify right side
    1,511.29x = 941,547.90
  5. Step 5: Solve for x
    x = 941,547.90/1,511.29
  6. Step 6: Final answer
    x = 623.01

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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.