Home / 2,130.64-2,934.40-1,835.80

Finding the Fourth Proportional to 2,130.64, 2,934.40 and 1,835.80

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Solution

The fourth proportional to 2,130.64, 2,934.40 and 1,835.80 is: 2,528.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.64 : 2,934.40 = 1,835.80 : x
  2. Step 2: Convert to fraction form
    2,130.64/2,934.40 = 1,835.80/x
  3. Step 3: Cross multiply
    2,130.64x = 2,934.40 × 1,835.80
  4. Step 4: Simplify right side
    2,130.64x = 5,386,971.52
  5. Step 5: Solve for x
    x = 5,386,971.52/2,130.64
  6. Step 6: Final answer
    x = 2,528.33

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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.