Home / 8,700.45-13,045.77-2,856.57

Finding the Fourth Proportional to 8,700.45, 13,045.77 and 2,856.57

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Solution

The fourth proportional to 8,700.45, 13,045.77 and 2,856.57 is: 4,283.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.45 : 13,045.77 = 2,856.57 : x
  2. Step 2: Convert to fraction form
    8,700.45/13,045.77 = 2,856.57/x
  3. Step 3: Cross multiply
    8,700.45x = 13,045.77 × 2,856.57
  4. Step 4: Simplify right side
    8,700.45x = 37,266,155.21
  5. Step 5: Solve for x
    x = 37,266,155.21/8,700.45
  6. Step 6: Final answer
    x = 4,283.24

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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.