Home / 1,410.40-2,100.32-1,386.08

Finding the Fourth Proportional to 1,410.40, 2,100.32 and 1,386.08

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Solution

The fourth proportional to 1,410.40, 2,100.32 and 1,386.08 is: 2,064.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410.40 : 2,100.32 = 1,386.08 : x
  2. Step 2: Convert to fraction form
    1,410.40/2,100.32 = 1,386.08/x
  3. Step 3: Cross multiply
    1,410.40x = 2,100.32 × 1,386.08
  4. Step 4: Simplify right side
    1,410.40x = 2,911,211.55
  5. Step 5: Solve for x
    x = 2,911,211.55/1,410.40
  6. Step 6: Final answer
    x = 2,064.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.