Home / 1,878.08-2,812.80-1,551.20

Finding the Fourth Proportional to 1,878.08, 2,812.80 and 1,551.20

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Solution

The fourth proportional to 1,878.08, 2,812.80 and 1,551.20 is: 2,323.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.08 : 2,812.80 = 1,551.20 : x
  2. Step 2: Convert to fraction form
    1,878.08/2,812.80 = 1,551.20/x
  3. Step 3: Cross multiply
    1,878.08x = 2,812.80 × 1,551.20
  4. Step 4: Simplify right side
    1,878.08x = 4,363,215.36
  5. Step 5: Solve for x
    x = 4,363,215.36/1,878.08
  6. Step 6: Final answer
    x = 2,323.23

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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.