Home / 7,158.36-9,879.39-4,505.70

Finding the Fourth Proportional to 7,158.36, 9,879.39 and 4,505.70

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Solution

The fourth proportional to 7,158.36, 9,879.39 and 4,505.70 is: 6,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158.36 : 9,879.39 = 4,505.70 : x
  2. Step 2: Convert to fraction form
    7,158.36/9,879.39 = 4,505.70/x
  3. Step 3: Cross multiply
    7,158.36x = 9,879.39 × 4,505.70
  4. Step 4: Simplify right side
    7,158.36x = 44,513,567.52
  5. Step 5: Solve for x
    x = 44,513,567.52/7,158.36
  6. Step 6: Final answer
    x = 6,218.40

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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.