Home / 2,155.12-2,970.93-1,523.68

Finding the Fourth Proportional to 2,155.12, 2,970.93 and 1,523.68

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Solution

The fourth proportional to 2,155.12, 2,970.93 and 1,523.68 is: 2,100.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.12 : 2,970.93 = 1,523.68 : x
  2. Step 2: Convert to fraction form
    2,155.12/2,970.93 = 1,523.68/x
  3. Step 3: Cross multiply
    2,155.12x = 2,970.93 × 1,523.68
  4. Step 4: Simplify right side
    2,155.12x = 4,526,746.62
  5. Step 5: Solve for x
    x = 4,526,746.62/2,155.12
  6. Step 6: Final answer
    x = 2,100.46

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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.