Home / 1,568.15-2,164.02-869.51

Finding the Fourth Proportional to 1,568.15, 2,164.02 and 869.51

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Solution

The fourth proportional to 1,568.15, 2,164.02 and 869.51 is: 1,199.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.15 : 2,164.02 = 869.51 : x
  2. Step 2: Convert to fraction form
    1,568.15/2,164.02 = 869.51/x
  3. Step 3: Cross multiply
    1,568.15x = 2,164.02 × 869.51
  4. Step 4: Simplify right side
    1,568.15x = 1,881,637.03
  5. Step 5: Solve for x
    x = 1,881,637.03/1,568.15
  6. Step 6: Final answer
    x = 1,199.91

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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.