Home / 2,907.18-4,011.87-1,913.00

Finding the Fourth Proportional to 2,907.18, 4,011.87 and 1,913.00

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Solution

The fourth proportional to 2,907.18, 4,011.87 and 1,913.00 is: 2,639.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.18 : 4,011.87 = 1,913.00 : x
  2. Step 2: Convert to fraction form
    2,907.18/4,011.87 = 1,913.00/x
  3. Step 3: Cross multiply
    2,907.18x = 4,011.87 × 1,913.00
  4. Step 4: Simplify right side
    2,907.18x = 7,674,687.25
  5. Step 5: Solve for x
    x = 7,674,687.25/2,907.18
  6. Step 6: Final answer
    x = 2,639.91

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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.