Home / 2,315.49-3,195.68-1,307.40

Finding the Fourth Proportional to 2,315.49, 3,195.68 and 1,307.40

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Solution

The fourth proportional to 2,315.49, 3,195.68 and 1,307.40 is: 1,804.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.49 : 3,195.68 = 1,307.40 : x
  2. Step 2: Convert to fraction form
    2,315.49/3,195.68 = 1,307.40/x
  3. Step 3: Cross multiply
    2,315.49x = 3,195.68 × 1,307.40
  4. Step 4: Simplify right side
    2,315.49x = 4,178,009.52
  5. Step 5: Solve for x
    x = 4,178,009.52/2,315.49
  6. Step 6: Final answer
    x = 1,804.38

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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.