Home / 1,672.19-2,307.64-926.20

Finding the Fourth Proportional to 1,672.19, 2,307.64 and 926.20

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Solution

The fourth proportional to 1,672.19, 2,307.64 and 926.20 is: 1,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.19 : 2,307.64 = 926.20 : x
  2. Step 2: Convert to fraction form
    1,672.19/2,307.64 = 926.20/x
  3. Step 3: Cross multiply
    1,672.19x = 2,307.64 × 926.20
  4. Step 4: Simplify right side
    1,672.19x = 2,137,338.47
  5. Step 5: Solve for x
    x = 2,137,338.47/1,672.19
  6. Step 6: Final answer
    x = 1,278.16

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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.