Home / 3,140.04-4,710.09-948.78

Finding the Fourth Proportional to 3,140.04, 4,710.09 and 948.78

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Solution

The fourth proportional to 3,140.04, 4,710.09 and 948.78 is: 1,423.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.04 : 4,710.09 = 948.78 : x
  2. Step 2: Convert to fraction form
    3,140.04/4,710.09 = 948.78/x
  3. Step 3: Cross multiply
    3,140.04x = 4,710.09 × 948.78
  4. Step 4: Simplify right side
    3,140.04x = 4,468,839.19
  5. Step 5: Solve for x
    x = 4,468,839.19/3,140.04
  6. Step 6: Final answer
    x = 1,423.18

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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.