Home / 4,700.40-7,050.60-3,145.20

Finding the Fourth Proportional to 4,700.40, 7,050.60 and 3,145.20

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Solution

The fourth proportional to 4,700.40, 7,050.60 and 3,145.20 is: 4,717.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,700.40 : 7,050.60 = 3,145.20 : x
  2. Step 2: Convert to fraction form
    4,700.40/7,050.60 = 3,145.20/x
  3. Step 3: Cross multiply
    4,700.40x = 7,050.60 × 3,145.20
  4. Step 4: Simplify right side
    4,700.40x = 22,175,547.12
  5. Step 5: Solve for x
    x = 22,175,547.12/4,700.40
  6. Step 6: Final answer
    x = 4,717.80

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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.