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Finding the Fourth Proportional to 7,988.88, 11,026.62 and 4,631.16

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Solution

The fourth proportional to 7,988.88, 11,026.62 and 4,631.16 is: 6,392.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.88 : 11,026.62 = 4,631.16 : x
  2. Step 2: Convert to fraction form
    7,988.88/11,026.62 = 4,631.16/x
  3. Step 3: Cross multiply
    7,988.88x = 11,026.62 × 4,631.16
  4. Step 4: Simplify right side
    7,988.88x = 51,066,041.48
  5. Step 5: Solve for x
    x = 51,066,041.48/7,988.88
  6. Step 6: Final answer
    x = 6,392.14

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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.