Home / 2,999.40-4,136.94-2,114.28

Finding the Fourth Proportional to 2,999.40, 4,136.94 and 2,114.28

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Solution

The fourth proportional to 2,999.40, 4,136.94 and 2,114.28 is: 2,916.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.40 : 4,136.94 = 2,114.28 : x
  2. Step 2: Convert to fraction form
    2,999.40/4,136.94 = 2,114.28/x
  3. Step 3: Cross multiply
    2,999.40x = 4,136.94 × 2,114.28
  4. Step 4: Simplify right side
    2,999.40x = 8,746,649.50
  5. Step 5: Solve for x
    x = 8,746,649.50/2,999.40
  6. Step 6: Final answer
    x = 2,916.13

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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.