Home / 1,948.68-2,688.41-1,240.34

Finding the Fourth Proportional to 1,948.68, 2,688.41 and 1,240.34

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Solution

The fourth proportional to 1,948.68, 2,688.41 and 1,240.34 is: 1,711.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.68 : 2,688.41 = 1,240.34 : x
  2. Step 2: Convert to fraction form
    1,948.68/2,688.41 = 1,240.34/x
  3. Step 3: Cross multiply
    1,948.68x = 2,688.41 × 1,240.34
  4. Step 4: Simplify right side
    1,948.68x = 3,334,522.82
  5. Step 5: Solve for x
    x = 3,334,522.82/1,948.68
  6. Step 6: Final answer
    x = 1,711.17

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.