Home / 9,316.40-12,858.48-5,340.20

Finding the Fourth Proportional to 9,316.40, 12,858.48 and 5,340.20

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Solution

The fourth proportional to 9,316.40, 12,858.48 and 5,340.20 is: 7,370.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,316.40 : 12,858.48 = 5,340.20 : x
  2. Step 2: Convert to fraction form
    9,316.40/12,858.48 = 5,340.20/x
  3. Step 3: Cross multiply
    9,316.40x = 12,858.48 × 5,340.20
  4. Step 4: Simplify right side
    9,316.40x = 68,666,790.60
  5. Step 5: Solve for x
    x = 68,666,790.60/9,316.40
  6. Step 6: Final answer
    x = 7,370.53

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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.