Home / 1,789.16-2,681.73-802.78

Finding the Fourth Proportional to 1,789.16, 2,681.73 and 802.78

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Solution

The fourth proportional to 1,789.16, 2,681.73 and 802.78 is: 1,203.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.16 : 2,681.73 = 802.78 : x
  2. Step 2: Convert to fraction form
    1,789.16/2,681.73 = 802.78/x
  3. Step 3: Cross multiply
    1,789.16x = 2,681.73 × 802.78
  4. Step 4: Simplify right side
    1,789.16x = 2,152,832.51
  5. Step 5: Solve for x
    x = 2,152,832.51/1,789.16
  6. Step 6: Final answer
    x = 1,203.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.