Home / 2,142.15-2,955.14-1,345.08

Finding the Fourth Proportional to 2,142.15, 2,955.14 and 1,345.08

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Solution

The fourth proportional to 2,142.15, 2,955.14 and 1,345.08 is: 1,855.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.15 : 2,955.14 = 1,345.08 : x
  2. Step 2: Convert to fraction form
    2,142.15/2,955.14 = 1,345.08/x
  3. Step 3: Cross multiply
    2,142.15x = 2,955.14 × 1,345.08
  4. Step 4: Simplify right side
    2,142.15x = 3,974,899.71
  5. Step 5: Solve for x
    x = 3,974,899.71/2,142.15
  6. Step 6: Final answer
    x = 1,855.57

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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.