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Finding the Fourth Proportional to 5,628.30, 8,430.30 and 4,656.30

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Solution

The fourth proportional to 5,628.30, 8,430.30 and 4,656.30 is: 6,974.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.30 : 8,430.30 = 4,656.30 : x
  2. Step 2: Convert to fraction form
    5,628.30/8,430.30 = 4,656.30/x
  3. Step 3: Cross multiply
    5,628.30x = 8,430.30 × 4,656.30
  4. Step 4: Simplify right side
    5,628.30x = 39,254,005.89
  5. Step 5: Solve for x
    x = 39,254,005.89/5,628.30
  6. Step 6: Final answer
    x = 6,974.40

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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.