Home / 2,878.30-3,972.23-1,683.32

Finding the Fourth Proportional to 2,878.30, 3,972.23 and 1,683.32

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Solution

The fourth proportional to 2,878.30, 3,972.23 and 1,683.32 is: 2,323.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.30 : 3,972.23 = 1,683.32 : x
  2. Step 2: Convert to fraction form
    2,878.30/3,972.23 = 1,683.32/x
  3. Step 3: Cross multiply
    2,878.30x = 3,972.23 × 1,683.32
  4. Step 4: Simplify right side
    2,878.30x = 6,686,534.20
  5. Step 5: Solve for x
    x = 6,686,534.20/2,878.30
  6. Step 6: Final answer
    x = 2,323.08

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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.