Home / 7,879.40-10,877.46-5,374.52

Finding the Fourth Proportional to 7,879.40, 10,877.46 and 5,374.52

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Solution

The fourth proportional to 7,879.40, 10,877.46 and 5,374.52 is: 7,419.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.40 : 10,877.46 = 5,374.52 : x
  2. Step 2: Convert to fraction form
    7,879.40/10,877.46 = 5,374.52/x
  3. Step 3: Cross multiply
    7,879.40x = 10,877.46 × 5,374.52
  4. Step 4: Simplify right side
    7,879.40x = 58,461,126.32
  5. Step 5: Solve for x
    x = 58,461,126.32/7,879.40
  6. Step 6: Final answer
    x = 7,419.49

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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.