Home / 2,136.28-2,948.56-1,351.40

Finding the Fourth Proportional to 2,136.28, 2,948.56 and 1,351.40

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Solution

The fourth proportional to 2,136.28, 2,948.56 and 1,351.40 is: 1,865.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.28 : 2,948.56 = 1,351.40 : x
  2. Step 2: Convert to fraction form
    2,136.28/2,948.56 = 1,351.40/x
  3. Step 3: Cross multiply
    2,136.28x = 2,948.56 × 1,351.40
  4. Step 4: Simplify right side
    2,136.28x = 3,984,683.98
  5. Step 5: Solve for x
    x = 3,984,683.98/2,136.28
  6. Step 6: Final answer
    x = 1,865.24

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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.