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Finding the Fourth Proportional to 2,860.71, 4,289.74 and 1,300.65

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Solution

The fourth proportional to 2,860.71, 4,289.74 and 1,300.65 is: 1,950.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.71 : 4,289.74 = 1,300.65 : x
  2. Step 2: Convert to fraction form
    2,860.71/4,289.74 = 1,300.65/x
  3. Step 3: Cross multiply
    2,860.71x = 4,289.74 × 1,300.65
  4. Step 4: Simplify right side
    2,860.71x = 5,579,430.99
  5. Step 5: Solve for x
    x = 5,579,430.99/2,860.71
  6. Step 6: Final answer
    x = 1,950.37

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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.