Home / 9,895.40-13,655.81-5,419.07

Finding the Fourth Proportional to 9,895.40, 13,655.81 and 5,419.07

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Solution

The fourth proportional to 9,895.40, 13,655.81 and 5,419.07 is: 7,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,895.40 : 13,655.81 = 5,419.07 : x
  2. Step 2: Convert to fraction form
    9,895.40/13,655.81 = 5,419.07/x
  3. Step 3: Cross multiply
    9,895.40x = 13,655.81 × 5,419.07
  4. Step 4: Simplify right side
    9,895.40x = 74,001,694.92
  5. Step 5: Solve for x
    x = 74,001,694.92/9,895.40
  6. Step 6: Final answer
    x = 7,478.40

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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.