Home / 1,486.36-2,051.20-823.21

Finding the Fourth Proportional to 1,486.36, 2,051.20 and 823.21

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Solution

The fourth proportional to 1,486.36, 2,051.20 and 823.21 is: 1,136.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.36 : 2,051.20 = 823.21 : x
  2. Step 2: Convert to fraction form
    1,486.36/2,051.20 = 823.21/x
  3. Step 3: Cross multiply
    1,486.36x = 2,051.20 × 823.21
  4. Step 4: Simplify right side
    1,486.36x = 1,688,564.38
  5. Step 5: Solve for x
    x = 1,688,564.38/1,486.36
  6. Step 6: Final answer
    x = 1,136.04

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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.