Home / 2,187.56-3,281.34-1,031.72

Finding the Fourth Proportional to 2,187.56, 3,281.34 and 1,031.72

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Solution

The fourth proportional to 2,187.56, 3,281.34 and 1,031.72 is: 1,547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.56 : 3,281.34 = 1,031.72 : x
  2. Step 2: Convert to fraction form
    2,187.56/3,281.34 = 1,031.72/x
  3. Step 3: Cross multiply
    2,187.56x = 3,281.34 × 1,031.72
  4. Step 4: Simplify right side
    2,187.56x = 3,385,424.10
  5. Step 5: Solve for x
    x = 3,385,424.10/2,187.56
  6. Step 6: Final answer
    x = 1,547.58

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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.