Home / 1,341.32-2,011.31-561.09

Finding the Fourth Proportional to 1,341.32, 2,011.31 and 561.09

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Solution

The fourth proportional to 1,341.32, 2,011.31 and 561.09 is: 841.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.32 : 2,011.31 = 561.09 : x
  2. Step 2: Convert to fraction form
    1,341.32/2,011.31 = 561.09/x
  3. Step 3: Cross multiply
    1,341.32x = 2,011.31 × 561.09
  4. Step 4: Simplify right side
    1,341.32x = 1,128,525.93
  5. Step 5: Solve for x
    x = 1,128,525.93/1,341.32
  6. Step 6: Final answer
    x = 841.35

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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.