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Finding the Fourth Proportional to 6,681.40, 9,210.84 and 5,484.64

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Solution

The fourth proportional to 6,681.40, 9,210.84 and 5,484.64 is: 7,561.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,681.40 : 9,210.84 = 5,484.64 : x
  2. Step 2: Convert to fraction form
    6,681.40/9,210.84 = 5,484.64/x
  3. Step 3: Cross multiply
    6,681.40x = 9,210.84 × 5,484.64
  4. Step 4: Simplify right side
    6,681.40x = 50,518,141.50
  5. Step 5: Solve for x
    x = 50,518,141.50/6,681.40
  6. Step 6: Final answer
    x = 7,561.01

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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.