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Finding the Fourth Proportional to 8,308.36, 12,430.14 and 5,703.40

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Solution

The fourth proportional to 8,308.36, 12,430.14 and 5,703.40 is: 8,532.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,308.36 : 12,430.14 = 5,703.40 : x
  2. Step 2: Convert to fraction form
    8,308.36/12,430.14 = 5,703.40/x
  3. Step 3: Cross multiply
    8,308.36x = 12,430.14 × 5,703.40
  4. Step 4: Simplify right side
    8,308.36x = 70,894,060.48
  5. Step 5: Solve for x
    x = 70,894,060.48/8,308.36
  6. Step 6: Final answer
    x = 8,532.86

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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.