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Finding the Fourth Proportional to 7,638.72, 10,535.04 and 4,984.08

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Solution

The fourth proportional to 7,638.72, 10,535.04 and 4,984.08 is: 6,873.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,638.72 : 10,535.04 = 4,984.08 : x
  2. Step 2: Convert to fraction form
    7,638.72/10,535.04 = 4,984.08/x
  3. Step 3: Cross multiply
    7,638.72x = 10,535.04 × 4,984.08
  4. Step 4: Simplify right side
    7,638.72x = 52,507,482.16
  5. Step 5: Solve for x
    x = 52,507,482.16/7,638.72
  6. Step 6: Final answer
    x = 6,873.86

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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.