Home / 1,439.00-1,985.81-841.91

Finding the Fourth Proportional to 1,439.00, 1,985.81 and 841.91

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Solution

The fourth proportional to 1,439.00, 1,985.81 and 841.91 is: 1,161.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.00 : 1,985.81 = 841.91 : x
  2. Step 2: Convert to fraction form
    1,439.00/1,985.81 = 841.91/x
  3. Step 3: Cross multiply
    1,439.00x = 1,985.81 × 841.91
  4. Step 4: Simplify right side
    1,439.00x = 1,671,859.16
  5. Step 5: Solve for x
    x = 1,671,859.16/1,439.00
  6. Step 6: Final answer
    x = 1,161.82

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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.