Home / 2,802.15-3,869.55-1,809.12

Finding the Fourth Proportional to 2,802.15, 3,869.55 and 1,809.12

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Solution

The fourth proportional to 2,802.15, 3,869.55 and 1,809.12 is: 2,498.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.15 : 3,869.55 = 1,809.12 : x
  2. Step 2: Convert to fraction form
    2,802.15/3,869.55 = 1,809.12/x
  3. Step 3: Cross multiply
    2,802.15x = 3,869.55 × 1,809.12
  4. Step 4: Simplify right side
    2,802.15x = 7,000,480.30
  5. Step 5: Solve for x
    x = 7,000,480.30/2,802.15
  6. Step 6: Final answer
    x = 2,498.25

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1.5x scale

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.