Home / 4,718.16-7,078.28-1,431.12

Finding the Fourth Proportional to 4,718.16, 7,078.28 and 1,431.12

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Solution

The fourth proportional to 4,718.16, 7,078.28 and 1,431.12 is: 2,147.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,718.16 : 7,078.28 = 1,431.12 : x
  2. Step 2: Convert to fraction form
    4,718.16/7,078.28 = 1,431.12/x
  3. Step 3: Cross multiply
    4,718.16x = 7,078.28 × 1,431.12
  4. Step 4: Simplify right side
    4,718.16x = 10,129,868.07
  5. Step 5: Solve for x
    x = 10,129,868.07/4,718.16
  6. Step 6: Final answer
    x = 2,147.00

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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.