Home / 2,127.30-2,935.10-1,243.32

Finding the Fourth Proportional to 2,127.30, 2,935.10 and 1,243.32

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Solution

The fourth proportional to 2,127.30, 2,935.10 and 1,243.32 is: 1,715.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.30 : 2,935.10 = 1,243.32 : x
  2. Step 2: Convert to fraction form
    2,127.30/2,935.10 = 1,243.32/x
  3. Step 3: Cross multiply
    2,127.30x = 2,935.10 × 1,243.32
  4. Step 4: Simplify right side
    2,127.30x = 3,649,268.53
  5. Step 5: Solve for x
    x = 3,649,268.53/2,127.30
  6. Step 6: Final answer
    x = 1,715.45

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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.