Home / 3,125.77-4,312.86-1,866.60

Finding the Fourth Proportional to 3,125.77, 4,312.86 and 1,866.60

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Solution

The fourth proportional to 3,125.77, 4,312.86 and 1,866.60 is: 2,575.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.77 : 4,312.86 = 1,866.60 : x
  2. Step 2: Convert to fraction form
    3,125.77/4,312.86 = 1,866.60/x
  3. Step 3: Cross multiply
    3,125.77x = 4,312.86 × 1,866.60
  4. Step 4: Simplify right side
    3,125.77x = 8,050,384.48
  5. Step 5: Solve for x
    x = 8,050,384.48/3,125.77
  6. Step 6: Final answer
    x = 2,575.49

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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.