Home / 1,210.80-1,815.12-562.32

Finding the Fourth Proportional to 1,210.80, 1,815.12 and 562.32

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Solution

The fourth proportional to 1,210.80, 1,815.12 and 562.32 is: 842.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.80 : 1,815.12 = 562.32 : x
  2. Step 2: Convert to fraction form
    1,210.80/1,815.12 = 562.32/x
  3. Step 3: Cross multiply
    1,210.80x = 1,815.12 × 562.32
  4. Step 4: Simplify right side
    1,210.80x = 1,020,678.28
  5. Step 5: Solve for x
    x = 1,020,678.28/1,210.80
  6. Step 6: Final answer
    x = 842.98

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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.