Home / 2,430.90-3,354.40-1,368.50

Finding the Fourth Proportional to 2,430.90, 3,354.40 and 1,368.50

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Solution

The fourth proportional to 2,430.90, 3,354.40 and 1,368.50 is: 1,888.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.90 : 3,354.40 = 1,368.50 : x
  2. Step 2: Convert to fraction form
    2,430.90/3,354.40 = 1,368.50/x
  3. Step 3: Cross multiply
    2,430.90x = 3,354.40 × 1,368.50
  4. Step 4: Simplify right side
    2,430.90x = 4,590,485.70
  5. Step 5: Solve for x
    x = 4,590,485.70/2,430.90
  6. Step 6: Final answer
    x = 1,888.39

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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.