Home / 5,215.16-7,823.10-1,928.18

Finding the Fourth Proportional to 5,215.16, 7,823.10 and 1,928.18

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Solution

The fourth proportional to 5,215.16, 7,823.10 and 1,928.18 is: 2,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.16 : 7,823.10 = 1,928.18 : x
  2. Step 2: Convert to fraction form
    5,215.16/7,823.10 = 1,928.18/x
  3. Step 3: Cross multiply
    5,215.16x = 7,823.10 × 1,928.18
  4. Step 4: Simplify right side
    5,215.16x = 15,084,344.96
  5. Step 5: Solve for x
    x = 15,084,344.96/5,215.16
  6. Step 6: Final answer
    x = 2,892.40

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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.