Home / 5,281.46-7,921.58-1,386.17

Finding the Fourth Proportional to 5,281.46, 7,921.58 and 1,386.17

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Solution

The fourth proportional to 5,281.46, 7,921.58 and 1,386.17 is: 2,079.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.46 : 7,921.58 = 1,386.17 : x
  2. Step 2: Convert to fraction form
    5,281.46/7,921.58 = 1,386.17/x
  3. Step 3: Cross multiply
    5,281.46x = 7,921.58 × 1,386.17
  4. Step 4: Simplify right side
    5,281.46x = 10,980,656.55
  5. Step 5: Solve for x
    x = 10,980,656.55/5,281.46
  6. Step 6: Final answer
    x = 2,079.09

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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.