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Finding the Fourth Proportional to 9,777.12, 13,492.46 and 5,300.88

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Solution

The fourth proportional to 9,777.12, 13,492.46 and 5,300.88 is: 7,315.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,777.12 : 13,492.46 = 5,300.88 : x
  2. Step 2: Convert to fraction form
    9,777.12/13,492.46 = 5,300.88/x
  3. Step 3: Cross multiply
    9,777.12x = 13,492.46 × 5,300.88
  4. Step 4: Simplify right side
    9,777.12x = 71,521,911.36
  5. Step 5: Solve for x
    x = 71,521,911.36/9,777.12
  6. Step 6: Final answer
    x = 7,315.23

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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.