Home / 1,561.68-2,332.62-1,329.12

Finding the Fourth Proportional to 1,561.68, 2,332.62 and 1,329.12

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Solution

The fourth proportional to 1,561.68, 2,332.62 and 1,329.12 is: 1,985.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.68 : 2,332.62 = 1,329.12 : x
  2. Step 2: Convert to fraction form
    1,561.68/2,332.62 = 1,329.12/x
  3. Step 3: Cross multiply
    1,561.68x = 2,332.62 × 1,329.12
  4. Step 4: Simplify right side
    1,561.68x = 3,100,331.89
  5. Step 5: Solve for x
    x = 3,100,331.89/1,561.68
  6. Step 6: Final answer
    x = 1,985.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.