Home / 2,078.40-2,868.48-1,580.32

Finding the Fourth Proportional to 2,078.40, 2,868.48 and 1,580.32

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Solution

The fourth proportional to 2,078.40, 2,868.48 and 1,580.32 is: 2,181.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.40 : 2,868.48 = 1,580.32 : x
  2. Step 2: Convert to fraction form
    2,078.40/2,868.48 = 1,580.32/x
  3. Step 3: Cross multiply
    2,078.40x = 2,868.48 × 1,580.32
  4. Step 4: Simplify right side
    2,078.40x = 4,533,116.31
  5. Step 5: Solve for x
    x = 4,533,116.31/2,078.40
  6. Step 6: Final answer
    x = 2,181.06

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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.