Home / 7,430.16-11,156.80-6,401.68

Finding the Fourth Proportional to 7,430.16, 11,156.80 and 6,401.68

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Solution

The fourth proportional to 7,430.16, 11,156.80 and 6,401.68 is: 9,612.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,430.16 : 11,156.80 = 6,401.68 : x
  2. Step 2: Convert to fraction form
    7,430.16/11,156.80 = 6,401.68/x
  3. Step 3: Cross multiply
    7,430.16x = 11,156.80 × 6,401.68
  4. Step 4: Simplify right side
    7,430.16x = 71,422,263.42
  5. Step 5: Solve for x
    x = 71,422,263.42/7,430.16
  6. Step 6: Final answer
    x = 9,612.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.