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Finding the Fourth Proportional to 7,948.32, 10,970 and 4,636.32

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Solution

The fourth proportional to 7,948.32, 10,970 and 4,636.32 is: 6,398.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,948.32 : 10,970 = 4,636.32 : x
  2. Step 2: Convert to fraction form
    7,948.32/10,970 = 4,636.32/x
  3. Step 3: Cross multiply
    7,948.32x = 10,970 × 4,636.32
  4. Step 4: Simplify right side
    7,948.32x = 50,860,430.40
  5. Step 5: Solve for x
    x = 50,860,430.40/7,948.32
  6. Step 6: Final answer
    x = 6,398.89

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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.