Home / 2,148.90-2,965.53-1,309.62

Finding the Fourth Proportional to 2,148.90, 2,965.53 and 1,309.62

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Solution

The fourth proportional to 2,148.90, 2,965.53 and 1,309.62 is: 1,807.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.90 : 2,965.53 = 1,309.62 : x
  2. Step 2: Convert to fraction form
    2,148.90/2,965.53 = 1,309.62/x
  3. Step 3: Cross multiply
    2,148.90x = 2,965.53 × 1,309.62
  4. Step 4: Simplify right side
    2,148.90x = 3,883,717.40
  5. Step 5: Solve for x
    x = 3,883,717.40/2,148.90
  6. Step 6: Final answer
    x = 1,807.30

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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.