Home / 5,430.81-8,125.65-3,285.72

Finding the Fourth Proportional to 5,430.81, 8,125.65 and 3,285.72

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Solution

The fourth proportional to 5,430.81, 8,125.65 and 3,285.72 is: 4,916.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.81 : 8,125.65 = 3,285.72 : x
  2. Step 2: Convert to fraction form
    5,430.81/8,125.65 = 3,285.72/x
  3. Step 3: Cross multiply
    5,430.81x = 8,125.65 × 3,285.72
  4. Step 4: Simplify right side
    5,430.81x = 26,698,610.72
  5. Step 5: Solve for x
    x = 26,698,610.72/5,430.81
  6. Step 6: Final answer
    x = 4,916.14

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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.