Home / 7,112.36-9,815.47-4,127.10

Finding the Fourth Proportional to 7,112.36, 9,815.47 and 4,127.10

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Solution

The fourth proportional to 7,112.36, 9,815.47 and 4,127.10 is: 5,695.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.36 : 9,815.47 = 4,127.10 : x
  2. Step 2: Convert to fraction form
    7,112.36/9,815.47 = 4,127.10/x
  3. Step 3: Cross multiply
    7,112.36x = 9,815.47 × 4,127.10
  4. Step 4: Simplify right side
    7,112.36x = 40,509,426.24
  5. Step 5: Solve for x
    x = 40,509,426.24/7,112.36
  6. Step 6: Final answer
    x = 5,695.64

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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.