Home / 2,920.90-4,030.92-1,802.50

Finding the Fourth Proportional to 2,920.90, 4,030.92 and 1,802.50

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Solution

The fourth proportional to 2,920.90, 4,030.92 and 1,802.50 is: 2,487.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.90 : 4,030.92 = 1,802.50 : x
  2. Step 2: Convert to fraction form
    2,920.90/4,030.92 = 1,802.50/x
  3. Step 3: Cross multiply
    2,920.90x = 4,030.92 × 1,802.50
  4. Step 4: Simplify right side
    2,920.90x = 7,265,733.30
  5. Step 5: Solve for x
    x = 7,265,733.30/2,920.90
  6. Step 6: Final answer
    x = 2,487.50

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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.