Home / 1,228.15-1,841.62-535.40

Finding the Fourth Proportional to 1,228.15, 1,841.62 and 535.40

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Solution

The fourth proportional to 1,228.15, 1,841.62 and 535.40 is: 802.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.15 : 1,841.62 = 535.40 : x
  2. Step 2: Convert to fraction form
    1,228.15/1,841.62 = 535.40/x
  3. Step 3: Cross multiply
    1,228.15x = 1,841.62 × 535.40
  4. Step 4: Simplify right side
    1,228.15x = 986,003.35
  5. Step 5: Solve for x
    x = 986,003.35/1,228.15
  6. Step 6: Final answer
    x = 802.84

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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.