Home / 1,515.34-2,091.63-926.14

Finding the Fourth Proportional to 1,515.34, 2,091.63 and 926.14

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Solution

The fourth proportional to 1,515.34, 2,091.63 and 926.14 is: 1,278.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.34 : 2,091.63 = 926.14 : x
  2. Step 2: Convert to fraction form
    1,515.34/2,091.63 = 926.14/x
  3. Step 3: Cross multiply
    1,515.34x = 2,091.63 × 926.14
  4. Step 4: Simplify right side
    1,515.34x = 1,937,142.21
  5. Step 5: Solve for x
    x = 1,937,142.21/1,515.34
  6. Step 6: Final answer
    x = 1,278.35

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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.