Home / 2,920.61-4,377.45-1,071.11

Finding the Fourth Proportional to 2,920.61, 4,377.45 and 1,071.11

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Solution

The fourth proportional to 2,920.61, 4,377.45 and 1,071.11 is: 1,605.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.61 : 4,377.45 = 1,071.11 : x
  2. Step 2: Convert to fraction form
    2,920.61/4,377.45 = 1,071.11/x
  3. Step 3: Cross multiply
    2,920.61x = 4,377.45 × 1,071.11
  4. Step 4: Simplify right side
    2,920.61x = 4,688,730.47
  5. Step 5: Solve for x
    x = 4,688,730.47/2,920.61
  6. Step 6: Final answer
    x = 1,605.39

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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.