Home / 2,087.24-3,130.25-1,306.40

Finding the Fourth Proportional to 2,087.24, 3,130.25 and 1,306.40

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Solution

The fourth proportional to 2,087.24, 3,130.25 and 1,306.40 is: 1,959.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.24 : 3,130.25 = 1,306.40 : x
  2. Step 2: Convert to fraction form
    2,087.24/3,130.25 = 1,306.40/x
  3. Step 3: Cross multiply
    2,087.24x = 3,130.25 × 1,306.40
  4. Step 4: Simplify right side
    2,087.24x = 4,089,336.42
  5. Step 5: Solve for x
    x = 4,089,336.42/2,087.24
  6. Step 6: Final answer
    x = 1,959.21

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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.