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Finding the Fourth Proportional to 7,955.78, 10,978.51 and 4,599.65

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Solution

The fourth proportional to 7,955.78, 10,978.51 and 4,599.65 is: 6,347.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.78 : 10,978.51 = 4,599.65 : x
  2. Step 2: Convert to fraction form
    7,955.78/10,978.51 = 4,599.65/x
  3. Step 3: Cross multiply
    7,955.78x = 10,978.51 × 4,599.65
  4. Step 4: Simplify right side
    7,955.78x = 50,497,294.71
  5. Step 5: Solve for x
    x = 50,497,294.71/7,955.78
  6. Step 6: Final answer
    x = 6,347.24

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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.