Home / 2,507.40-3,460.28-1,388.32

Finding the Fourth Proportional to 2,507.40, 3,460.28 and 1,388.32

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Solution

The fourth proportional to 2,507.40, 3,460.28 and 1,388.32 is: 1,915.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,507.40 : 3,460.28 = 1,388.32 : x
  2. Step 2: Convert to fraction form
    2,507.40/3,460.28 = 1,388.32/x
  3. Step 3: Cross multiply
    2,507.40x = 3,460.28 × 1,388.32
  4. Step 4: Simplify right side
    2,507.40x = 4,803,975.93
  5. Step 5: Solve for x
    x = 4,803,975.93/2,507.40
  6. Step 6: Final answer
    x = 1,915.92

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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.