Home / 3,130.50-4,320.63-1,888.50

Finding the Fourth Proportional to 3,130.50, 4,320.63 and 1,888.50

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Solution

The fourth proportional to 3,130.50, 4,320.63 and 1,888.50 is: 2,606.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.50 : 4,320.63 = 1,888.50 : x
  2. Step 2: Convert to fraction form
    3,130.50/4,320.63 = 1,888.50/x
  3. Step 3: Cross multiply
    3,130.50x = 4,320.63 × 1,888.50
  4. Step 4: Simplify right side
    3,130.50x = 8,159,509.76
  5. Step 5: Solve for x
    x = 8,159,509.76/3,130.50
  6. Step 6: Final answer
    x = 2,606.46

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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.