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Finding the Fourth Proportional to 9,421.60, 12,994 and 7,068.96

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Solution

The fourth proportional to 9,421.60, 12,994 and 7,068.96 is: 9,749.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.60 : 12,994 = 7,068.96 : x
  2. Step 2: Convert to fraction form
    9,421.60/12,994 = 7,068.96/x
  3. Step 3: Cross multiply
    9,421.60x = 12,994 × 7,068.96
  4. Step 4: Simplify right side
    9,421.60x = 91,854,066.24
  5. Step 5: Solve for x
    x = 91,854,066.24/9,421.60
  6. Step 6: Final answer
    x = 9,749.31

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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.