Home / 1,948.14-2,921.77-561.16

Finding the Fourth Proportional to 1,948.14, 2,921.77 and 561.16

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Solution

The fourth proportional to 1,948.14, 2,921.77 and 561.16 is: 841.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.14 : 2,921.77 = 561.16 : x
  2. Step 2: Convert to fraction form
    1,948.14/2,921.77 = 561.16/x
  3. Step 3: Cross multiply
    1,948.14x = 2,921.77 × 561.16
  4. Step 4: Simplify right side
    1,948.14x = 1,639,584.81
  5. Step 5: Solve for x
    x = 1,639,584.81/1,948.14
  6. Step 6: Final answer
    x = 841.62

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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.