Home / 9,681.50-13,360.74-5,490.02

Finding the Fourth Proportional to 9,681.50, 13,360.74 and 5,490.02

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Solution

The fourth proportional to 9,681.50, 13,360.74 and 5,490.02 is: 7,576.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,681.50 : 13,360.74 = 5,490.02 : x
  2. Step 2: Convert to fraction form
    9,681.50/13,360.74 = 5,490.02/x
  3. Step 3: Cross multiply
    9,681.50x = 13,360.74 × 5,490.02
  4. Step 4: Simplify right side
    9,681.50x = 73,350,729.81
  5. Step 5: Solve for x
    x = 73,350,729.81/9,681.50
  6. Step 6: Final answer
    x = 7,576.38

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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.