Home / 2,920.14-4,379.18-971.82

Finding the Fourth Proportional to 2,920.14, 4,379.18 and 971.82

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Solution

The fourth proportional to 2,920.14, 4,379.18 and 971.82 is: 1,457.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.14 : 4,379.18 = 971.82 : x
  2. Step 2: Convert to fraction form
    2,920.14/4,379.18 = 971.82/x
  3. Step 3: Cross multiply
    2,920.14x = 4,379.18 × 971.82
  4. Step 4: Simplify right side
    2,920.14x = 4,255,774.71
  5. Step 5: Solve for x
    x = 4,255,774.71/2,920.14
  6. Step 6: Final answer
    x = 1,457.39

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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.