Home / 1,192.71-1,646.45-1,117.99

Finding the Fourth Proportional to 1,192.71, 1,646.45 and 1,117.99

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Solution

The fourth proportional to 1,192.71, 1,646.45 and 1,117.99 is: 1,543.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.71 : 1,646.45 = 1,117.99 : x
  2. Step 2: Convert to fraction form
    1,192.71/1,646.45 = 1,117.99/x
  3. Step 3: Cross multiply
    1,192.71x = 1,646.45 × 1,117.99
  4. Step 4: Simplify right side
    1,192.71x = 1,840,709.18
  5. Step 5: Solve for x
    x = 1,840,709.18/1,192.71
  6. Step 6: Final answer
    x = 1,543.30

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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.