Home / 2,160.07-2,980.38-1,569.58

Finding the Fourth Proportional to 2,160.07, 2,980.38 and 1,569.58

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Solution

The fourth proportional to 2,160.07, 2,980.38 and 1,569.58 is: 2,165.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.07 : 2,980.38 = 1,569.58 : x
  2. Step 2: Convert to fraction form
    2,160.07/2,980.38 = 1,569.58/x
  3. Step 3: Cross multiply
    2,160.07x = 2,980.38 × 1,569.58
  4. Step 4: Simplify right side
    2,160.07x = 4,677,944.84
  5. Step 5: Solve for x
    x = 4,677,944.84/2,160.07
  6. Step 6: Final answer
    x = 2,165.65

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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.