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Finding the Fourth Proportional to 9,986.94, 14,980.37 and 2,590.79

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Solution

The fourth proportional to 9,986.94, 14,980.37 and 2,590.79 is: 3,886.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.94 : 14,980.37 = 2,590.79 : x
  2. Step 2: Convert to fraction form
    9,986.94/14,980.37 = 2,590.79/x
  3. Step 3: Cross multiply
    9,986.94x = 14,980.37 × 2,590.79
  4. Step 4: Simplify right side
    9,986.94x = 38,810,904.94
  5. Step 5: Solve for x
    x = 38,810,904.94/9,986.94
  6. Step 6: Final answer
    x = 3,886.17

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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.