Home / 7,870.24-10,859.28-4,725.28

Finding the Fourth Proportional to 7,870.24, 10,859.28 and 4,725.28

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Solution

The fourth proportional to 7,870.24, 10,859.28 and 4,725.28 is: 6,519.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,870.24 : 10,859.28 = 4,725.28 : x
  2. Step 2: Convert to fraction form
    7,870.24/10,859.28 = 4,725.28/x
  3. Step 3: Cross multiply
    7,870.24x = 10,859.28 × 4,725.28
  4. Step 4: Simplify right side
    7,870.24x = 51,313,138.60
  5. Step 5: Solve for x
    x = 51,313,138.60/7,870.24
  6. Step 6: Final answer
    x = 6,519.90

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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.