Home / 7,409.12-10,210.43-5,309.60

Finding the Fourth Proportional to 7,409.12, 10,210.43 and 5,309.60

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Solution

The fourth proportional to 7,409.12, 10,210.43 and 5,309.60 is: 7,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,409.12 : 10,210.43 = 5,309.60 : x
  2. Step 2: Convert to fraction form
    7,409.12/10,210.43 = 5,309.60/x
  3. Step 3: Cross multiply
    7,409.12x = 10,210.43 × 5,309.60
  4. Step 4: Simplify right side
    7,409.12x = 54,213,299.13
  5. Step 5: Solve for x
    x = 54,213,299.13/7,409.12
  6. Step 6: Final answer
    x = 7,317.10

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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.