Home / 2,136.48-2,948.40-1,205.20

Finding the Fourth Proportional to 2,136.48, 2,948.40 and 1,205.20

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Solution

The fourth proportional to 2,136.48, 2,948.40 and 1,205.20 is: 1,663.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.48 : 2,948.40 = 1,205.20 : x
  2. Step 2: Convert to fraction form
    2,136.48/2,948.40 = 1,205.20/x
  3. Step 3: Cross multiply
    2,136.48x = 2,948.40 × 1,205.20
  4. Step 4: Simplify right side
    2,136.48x = 3,553,411.68
  5. Step 5: Solve for x
    x = 3,553,411.68/2,136.48
  6. Step 6: Final answer
    x = 1,663.21

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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.