Home / 1,672.45-2,307.85-926.35

Finding the Fourth Proportional to 1,672.45, 2,307.85 and 926.35

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Solution

The fourth proportional to 1,672.45, 2,307.85 and 926.35 is: 1,278.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.45 : 2,307.85 = 926.35 : x
  2. Step 2: Convert to fraction form
    1,672.45/2,307.85 = 926.35/x
  3. Step 3: Cross multiply
    1,672.45x = 2,307.85 × 926.35
  4. Step 4: Simplify right side
    1,672.45x = 2,137,868.76
  5. Step 5: Solve for x
    x = 2,137,868.76/1,672.45
  6. Step 6: Final answer
    x = 1,278.29

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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.