Home / 2,130.12-2,939.37-1,570.90

Finding the Fourth Proportional to 2,130.12, 2,939.37 and 1,570.90

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Solution

The fourth proportional to 2,130.12, 2,939.37 and 1,570.90 is: 2,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.12 : 2,939.37 = 1,570.90 : x
  2. Step 2: Convert to fraction form
    2,130.12/2,939.37 = 1,570.90/x
  3. Step 3: Cross multiply
    2,130.12x = 2,939.37 × 1,570.90
  4. Step 4: Simplify right side
    2,130.12x = 4,617,456.33
  5. Step 5: Solve for x
    x = 4,617,456.33/2,130.12
  6. Step 6: Final answer
    x = 2,167.70

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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.