Home / 1,326.04-1,989.08-1,111.12

Finding the Fourth Proportional to 1,326.04, 1,989.08 and 1,111.12

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Solution

The fourth proportional to 1,326.04, 1,989.08 and 1,111.12 is: 1,666.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.04 : 1,989.08 = 1,111.12 : x
  2. Step 2: Convert to fraction form
    1,326.04/1,989.08 = 1,111.12/x
  3. Step 3: Cross multiply
    1,326.04x = 1,989.08 × 1,111.12
  4. Step 4: Simplify right side
    1,326.04x = 2,210,106.57
  5. Step 5: Solve for x
    x = 2,210,106.57/1,326.04
  6. Step 6: Final answer
    x = 1,666.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.