Home / 1,420.04-2,128.74-1,303.25

Finding the Fourth Proportional to 1,420.04, 2,128.74 and 1,303.25

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Solution

The fourth proportional to 1,420.04, 2,128.74 and 1,303.25 is: 1,953.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420.04 : 2,128.74 = 1,303.25 : x
  2. Step 2: Convert to fraction form
    1,420.04/2,128.74 = 1,303.25/x
  3. Step 3: Cross multiply
    1,420.04x = 2,128.74 × 1,303.25
  4. Step 4: Simplify right side
    1,420.04x = 2,774,280.41
  5. Step 5: Solve for x
    x = 2,774,280.41/1,420.04
  6. Step 6: Final answer
    x = 1,953.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.