Home / 7,145.40-9,863.10-4,314.36

Finding the Fourth Proportional to 7,145.40, 9,863.10 and 4,314.36

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Solution

The fourth proportional to 7,145.40, 9,863.10 and 4,314.36 is: 5,955.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.40 : 9,863.10 = 4,314.36 : x
  2. Step 2: Convert to fraction form
    7,145.40/9,863.10 = 4,314.36/x
  3. Step 3: Cross multiply
    7,145.40x = 9,863.10 × 4,314.36
  4. Step 4: Simplify right side
    7,145.40x = 42,552,964.12
  5. Step 5: Solve for x
    x = 42,552,964.12/7,145.40
  6. Step 6: Final answer
    x = 5,955.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.