Home / 1,543.23-2,127.96-983.07

Finding the Fourth Proportional to 1,543.23, 2,127.96 and 983.07

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Solution

The fourth proportional to 1,543.23, 2,127.96 and 983.07 is: 1,355.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.23 : 2,127.96 = 983.07 : x
  2. Step 2: Convert to fraction form
    1,543.23/2,127.96 = 983.07/x
  3. Step 3: Cross multiply
    1,543.23x = 2,127.96 × 983.07
  4. Step 4: Simplify right side
    1,543.23x = 2,091,933.64
  5. Step 5: Solve for x
    x = 2,091,933.64/1,543.23
  6. Step 6: Final answer
    x = 1,355.56

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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.