Home / 1,325.79-1,986.52-675.63

Finding the Fourth Proportional to 1,325.79, 1,986.52 and 675.63

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Solution

The fourth proportional to 1,325.79, 1,986.52 and 675.63 is: 1,012.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.79 : 1,986.52 = 675.63 : x
  2. Step 2: Convert to fraction form
    1,325.79/1,986.52 = 675.63/x
  3. Step 3: Cross multiply
    1,325.79x = 1,986.52 × 675.63
  4. Step 4: Simplify right side
    1,325.79x = 1,342,139.20
  5. Step 5: Solve for x
    x = 1,342,139.20/1,325.79
  6. Step 6: Final answer
    x = 1,012.34

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1.5x scale

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.