Home / 1,117.04-1,543.26-945.32

Finding the Fourth Proportional to 1,117.04, 1,543.26 and 945.32

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Solution

The fourth proportional to 1,117.04, 1,543.26 and 945.32 is: 1,306.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.04 : 1,543.26 = 945.32 : x
  2. Step 2: Convert to fraction form
    1,117.04/1,543.26 = 945.32/x
  3. Step 3: Cross multiply
    1,117.04x = 1,543.26 × 945.32
  4. Step 4: Simplify right side
    1,117.04x = 1,458,874.54
  5. Step 5: Solve for x
    x = 1,458,874.54/1,117.04
  6. Step 6: Final answer
    x = 1,306.02

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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.