Home / 2,153.58-2,970.04-1,555.91

Finding the Fourth Proportional to 2,153.58, 2,970.04 and 1,555.91

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Solution

The fourth proportional to 2,153.58, 2,970.04 and 1,555.91 is: 2,145.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.58 : 2,970.04 = 1,555.91 : x
  2. Step 2: Convert to fraction form
    2,153.58/2,970.04 = 1,555.91/x
  3. Step 3: Cross multiply
    2,153.58x = 2,970.04 × 1,555.91
  4. Step 4: Simplify right side
    2,153.58x = 4,621,114.94
  5. Step 5: Solve for x
    x = 4,621,114.94/2,153.58
  6. Step 6: Final answer
    x = 2,145.78

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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.