Home / 1,001.18-1,381.61-581.63

Finding the Fourth Proportional to 1,001.18, 1,381.61 and 581.63

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Solution

The fourth proportional to 1,001.18, 1,381.61 and 581.63 is: 802.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.18 : 1,381.61 = 581.63 : x
  2. Step 2: Convert to fraction form
    1,001.18/1,381.61 = 581.63/x
  3. Step 3: Cross multiply
    1,001.18x = 1,381.61 × 581.63
  4. Step 4: Simplify right side
    1,001.18x = 803,576.01
  5. Step 5: Solve for x
    x = 803,576.01/1,001.18
  6. Step 6: Final answer
    x = 802.63

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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.