Home / 7,845.12-10,828.80-5,368.32

Finding the Fourth Proportional to 7,845.12, 10,828.80 and 5,368.32

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Solution

The fourth proportional to 7,845.12, 10,828.80 and 5,368.32 is: 7,410.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,845.12 : 10,828.80 = 5,368.32 : x
  2. Step 2: Convert to fraction form
    7,845.12/10,828.80 = 5,368.32/x
  3. Step 3: Cross multiply
    7,845.12x = 10,828.80 × 5,368.32
  4. Step 4: Simplify right side
    7,845.12x = 58,132,463.62
  5. Step 5: Solve for x
    x = 58,132,463.62/7,845.12
  6. Step 6: Final answer
    x = 7,410.02

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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.