Home / 2,148.90-2,965.52-1,309.64

Finding the Fourth Proportional to 2,148.90, 2,965.52 and 1,309.64

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Solution

The fourth proportional to 2,148.90, 2,965.52 and 1,309.64 is: 1,807.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.90 : 2,965.52 = 1,309.64 : x
  2. Step 2: Convert to fraction form
    2,148.90/2,965.52 = 1,309.64/x
  3. Step 3: Cross multiply
    2,148.90x = 2,965.52 × 1,309.64
  4. Step 4: Simplify right side
    2,148.90x = 3,883,742.24
  5. Step 5: Solve for x
    x = 3,883,742.24/2,148.90
  6. Step 6: Final answer
    x = 1,807.32

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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.