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Finding the Fourth Proportional to 7,578.30, 10,426.95 and 7,403.34

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Solution

The fourth proportional to 7,578.30, 10,426.95 and 7,403.34 is: 10,186.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.30 : 10,426.95 = 7,403.34 : x
  2. Step 2: Convert to fraction form
    7,578.30/10,426.95 = 7,403.34/x
  3. Step 3: Cross multiply
    7,578.30x = 10,426.95 × 7,403.34
  4. Step 4: Simplify right side
    7,578.30x = 77,194,256.01
  5. Step 5: Solve for x
    x = 77,194,256.01/7,578.30
  6. Step 6: Final answer
    x = 10,186.22

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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.