Home / 7,112.21-9,810.99-5,430.65

Finding the Fourth Proportional to 7,112.21, 9,810.99 and 5,430.65

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Solution

The fourth proportional to 7,112.21, 9,810.99 and 5,430.65 is: 7,491.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.21 : 9,810.99 = 5,430.65 : x
  2. Step 2: Convert to fraction form
    7,112.21/9,810.99 = 5,430.65/x
  3. Step 3: Cross multiply
    7,112.21x = 9,810.99 × 5,430.65
  4. Step 4: Simplify right side
    7,112.21x = 53,280,003.79
  5. Step 5: Solve for x
    x = 53,280,003.79/7,112.21
  6. Step 6: Final answer
    x = 7,491.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.