Home / 3,128.77-4,317.58-1,870.52

Finding the Fourth Proportional to 3,128.77, 4,317.58 and 1,870.52

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Solution

The fourth proportional to 3,128.77, 4,317.58 and 1,870.52 is: 2,581.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.77 : 4,317.58 = 1,870.52 : x
  2. Step 2: Convert to fraction form
    3,128.77/4,317.58 = 1,870.52/x
  3. Step 3: Cross multiply
    3,128.77x = 4,317.58 × 1,870.52
  4. Step 4: Simplify right side
    3,128.77x = 8,076,125.86
  5. Step 5: Solve for x
    x = 8,076,125.86/3,128.77
  6. Step 6: Final answer
    x = 2,581.25

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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.