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Finding the Fourth Proportional to 9,879.30, 14,830.53 and 7,800.71

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Solution

The fourth proportional to 9,879.30, 14,830.53 and 7,800.71 is: 11,710.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.30 : 14,830.53 = 7,800.71 : x
  2. Step 2: Convert to fraction form
    9,879.30/14,830.53 = 7,800.71/x
  3. Step 3: Cross multiply
    9,879.30x = 14,830.53 × 7,800.71
  4. Step 4: Simplify right side
    9,879.30x = 115,688,550.52
  5. Step 5: Solve for x
    x = 115,688,550.52/9,879.30
  6. Step 6: Final answer
    x = 11,710.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.