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Finding the Fourth Proportional to 7,808.65, 10,775.99 and 4,271.87

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Solution

The fourth proportional to 7,808.65, 10,775.99 and 4,271.87 is: 5,895.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808.65 : 10,775.99 = 4,271.87 : x
  2. Step 2: Convert to fraction form
    7,808.65/10,775.99 = 4,271.87/x
  3. Step 3: Cross multiply
    7,808.65x = 10,775.99 × 4,271.87
  4. Step 4: Simplify right side
    7,808.65x = 46,033,666.02
  5. Step 5: Solve for x
    x = 46,033,666.02/7,808.65
  6. Step 6: Final answer
    x = 5,895.22

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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.