Home / 7,475.21-10,315.80-4,118.04

Finding the Fourth Proportional to 7,475.21, 10,315.80 and 4,118.04

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Solution

The fourth proportional to 7,475.21, 10,315.80 and 4,118.04 is: 5,682.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,475.21 : 10,315.80 = 4,118.04 : x
  2. Step 2: Convert to fraction form
    7,475.21/10,315.80 = 4,118.04/x
  3. Step 3: Cross multiply
    7,475.21x = 10,315.80 × 4,118.04
  4. Step 4: Simplify right side
    7,475.21x = 42,480,851.24
  5. Step 5: Solve for x
    x = 42,480,851.24/7,475.21
  6. Step 6: Final answer
    x = 5,682.90

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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.