Home / 7,448.55-10,279.05-4,091.40

Finding the Fourth Proportional to 7,448.55, 10,279.05 and 4,091.40

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Solution

The fourth proportional to 7,448.55, 10,279.05 and 4,091.40 is: 5,646.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,448.55 : 10,279.05 = 4,091.40 : x
  2. Step 2: Convert to fraction form
    7,448.55/10,279.05 = 4,091.40/x
  3. Step 3: Cross multiply
    7,448.55x = 10,279.05 × 4,091.40
  4. Step 4: Simplify right side
    7,448.55x = 42,055,705.17
  5. Step 5: Solve for x
    x = 42,055,705.17/7,448.55
  6. Step 6: Final answer
    x = 5,646.16

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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.