Home / 7,430.10-11,123.28-5,490.96

Finding the Fourth Proportional to 7,430.10, 11,123.28 and 5,490.96

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Solution

The fourth proportional to 7,430.10, 11,123.28 and 5,490.96 is: 8,220.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,430.10 : 11,123.28 = 5,490.96 : x
  2. Step 2: Convert to fraction form
    7,430.10/11,123.28 = 5,490.96/x
  3. Step 3: Cross multiply
    7,430.10x = 11,123.28 × 5,490.96
  4. Step 4: Simplify right side
    7,430.10x = 61,077,485.55
  5. Step 5: Solve for x
    x = 61,077,485.55/7,430.10
  6. Step 6: Final answer
    x = 8,220.28

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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.