Home / 7,130.43-9,842.28-4,145.70

Finding the Fourth Proportional to 7,130.43, 9,842.28 and 4,145.70

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Solution

The fourth proportional to 7,130.43, 9,842.28 and 4,145.70 is: 5,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.43 : 9,842.28 = 4,145.70 : x
  2. Step 2: Convert to fraction form
    7,130.43/9,842.28 = 4,145.70/x
  3. Step 3: Cross multiply
    7,130.43x = 9,842.28 × 4,145.70
  4. Step 4: Simplify right side
    7,130.43x = 40,803,140.20
  5. Step 5: Solve for x
    x = 40,803,140.20/7,130.43
  6. Step 6: Final answer
    x = 5,722.40

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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.