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Finding the Fourth Proportional to 9,810.40, 14,715.60 and 8,837.60

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Solution

The fourth proportional to 9,810.40, 14,715.60 and 8,837.60 is: 13,256.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,810.40 : 14,715.60 = 8,837.60 : x
  2. Step 2: Convert to fraction form
    9,810.40/14,715.60 = 8,837.60/x
  3. Step 3: Cross multiply
    9,810.40x = 14,715.60 × 8,837.60
  4. Step 4: Simplify right side
    9,810.40x = 130,050,586.56
  5. Step 5: Solve for x
    x = 130,050,586.56/9,810.40
  6. Step 6: Final answer
    x = 13,256.40

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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.