Home / 1,767.89-2,439.80-981.93

Finding the Fourth Proportional to 1,767.89, 2,439.80 and 981.93

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Solution

The fourth proportional to 1,767.89, 2,439.80 and 981.93 is: 1,355.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,767.89 : 2,439.80 = 981.93 : x
  2. Step 2: Convert to fraction form
    1,767.89/2,439.80 = 981.93/x
  3. Step 3: Cross multiply
    1,767.89x = 2,439.80 × 981.93
  4. Step 4: Simplify right side
    1,767.89x = 2,395,712.81
  5. Step 5: Solve for x
    x = 2,395,712.81/1,767.89
  6. Step 6: Final answer
    x = 1,355.13

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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.