Home / 7,430.10-11,145.15-4,947.45

Finding the Fourth Proportional to 7,430.10, 11,145.15 and 4,947.45

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Solution

The fourth proportional to 7,430.10, 11,145.15 and 4,947.45 is: 7,421.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,430.10 : 11,145.15 = 4,947.45 : x
  2. Step 2: Convert to fraction form
    7,430.10/11,145.15 = 4,947.45/x
  3. Step 3: Cross multiply
    7,430.10x = 11,145.15 × 4,947.45
  4. Step 4: Simplify right side
    7,430.10x = 55,140,072.37
  5. Step 5: Solve for x
    x = 55,140,072.37/7,430.10
  6. Step 6: Final answer
    x = 7,421.18

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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.