Home / 1,486.29-2,051.05-823.15

Finding the Fourth Proportional to 1,486.29, 2,051.05 and 823.15

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Solution

The fourth proportional to 1,486.29, 2,051.05 and 823.15 is: 1,135.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.29 : 2,051.05 = 823.15 : x
  2. Step 2: Convert to fraction form
    1,486.29/2,051.05 = 823.15/x
  3. Step 3: Cross multiply
    1,486.29x = 2,051.05 × 823.15
  4. Step 4: Simplify right side
    1,486.29x = 1,688,312.32
  5. Step 5: Solve for x
    x = 1,688,312.32/1,486.29
  6. Step 6: Final answer
    x = 1,135.93

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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.