Home / 8,420.42-12,629.64-2,577.08

Finding the Fourth Proportional to 8,420.42, 12,629.64 and 2,577.08

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Solution

The fourth proportional to 8,420.42, 12,629.64 and 2,577.08 is: 3,865.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.42 : 12,629.64 = 2,577.08 : x
  2. Step 2: Convert to fraction form
    8,420.42/12,629.64 = 2,577.08/x
  3. Step 3: Cross multiply
    8,420.42x = 12,629.64 × 2,577.08
  4. Step 4: Simplify right side
    8,420.42x = 32,547,592.65
  5. Step 5: Solve for x
    x = 32,547,592.65/8,420.42
  6. Step 6: Final answer
    x = 3,865.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.