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Finding the Fourth Proportional to 9,920.61, 14,879.48 and 2,898.77

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Solution

The fourth proportional to 9,920.61, 14,879.48 and 2,898.77 is: 4,347.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920.61 : 14,879.48 = 2,898.77 : x
  2. Step 2: Convert to fraction form
    9,920.61/14,879.48 = 2,898.77/x
  3. Step 3: Cross multiply
    9,920.61x = 14,879.48 × 2,898.77
  4. Step 4: Simplify right side
    9,920.61x = 43,132,101.35
  5. Step 5: Solve for x
    x = 43,132,101.35/9,920.61
  6. Step 6: Final answer
    x = 4,347.73

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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.